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< div class = "breadcrumbs" > < a href = "../../../index.html" > micro_utils.dokka< / a > < span class = "delimiter" > /< / span > < a href = "../index.html" > dev.inmo.micro_utils.common< / a > < span class = "delimiter" > /< / span > < span class = "current" > Optional< / span > < / div >
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< h1 class = "cover" > < span > < span > Optional< / span > < / span > < / h1 >
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< div class = "platform-hinted " data-platform-hinted = "data-platform-hinted" > < div class = "content sourceset-dependent-content" data-active = "" data-togglable = ":micro_utils.dokka:dokkaHtml/commonMain" > < div class = "symbol monospace" > < div class = "block" > < div class = "block" > < span class = "token annotation builtin" > @< / span > < span data-unresolved-link = "kotlinx.serialization/Serializable///PointingToDeclaration/" > < span class = "token annotation builtin" > Serializable< / span > < / span > < / div > < / div > < span class = "token keyword" > data < / span > < span class = "token keyword" > class < / span > < a href = "index.html" > Optional< / a > < span class = "token operator" > < < / span > < span class = "token keyword" > < / span > < a href = "index.html" > T< / a > < span class = "token operator" > > < / span > < span class = "clearfix" > < span class = "floating-right" > (< a href = "https://github.com/InsanusMokrassar/MicroUtils/blob/master//common/src/commonMain/kotlin/dev/inmo/micro_utils/common/Optional.kt#L23" > source< / a > )< / span > < / span > < / div > < p class = "paragraph" > This type represents < a href = "index.html" > T< / a > as not only potentially nullable data, but also as a data which can not be presented. This type will be useful in cases when < a href = "index.html" > T< / a > is nullable and null as valuable data too in time of data absence should be presented by some third type.< / p > < p class = "paragraph" > Let's imagine, you have nullable name in some database. In case when name is not nullable everything is clear - null will represent absence of row in the database. In case when name is nullable null will be a little bit dual-meaning, cause this null will say nothing about availability of the row (of course, it is exaggerated example)< / p > < h4 class = "" > See also< / h4 > < div class = "table" > < div class = "table-row" data-filterable-current = ":micro_utils.dokka:dokkaHtml/commonMain" data-filterable-set = ":micro_utils.dokka:dokkaHtml/commonMain" > < div class = "main-subrow keyValue " > < div class = "" > < span class = "inline-flex" > < div > < a href = "-companion/presented.html" > < span > Optional.< / span > < wbr > < / wbr > < span > Companion.< / span > < wbr > < / wbr > < span > presented< / span > < / a > < / div > < / span > < / div > < div > < / div > < / div > < / div > < div class = "table-row" data-filterable-current = ":micro_utils.dokka:dokkaHtml/commonMain" data-filterable-set = ":micro_utils.dokka:dokkaHtml/commonMain" > < div class = "main-subrow keyValue " > < div class = "" > < span class = "inline-flex" > < div > < a href = "-companion/absent.html" > < span > Optional.< / span > < wbr > < / wbr > < span > Companion.< / span > < wbr > < / wbr > < span > absent< / span > < / a > < / div > < / span > < / div > < div > < / div > < / div > < / div > < div class = "table-row" data-filterable-current = ":micro_utils.dokka:dokkaHtml/commonMain" data-filterable-set = ":micro_utils.dokka:dokkaHtml/commonMain" > < div class = "main-subrow keyValue " > < div class = "" > < span class = "inline-flex" > < div > < span data-unresolved-link = "dev.inmo.micro_utils.common//optional/dev.inmo.micro_utils.common.Optional[TypeParam(bounds=[kotlin.Any?])]#/PointingToDeclaration/" > < span > < span > optional< / span > < / span > < / span > < / div > < / span > < / div > < div > < / div > < / div > < / div > < div class = "table-row" data-filterable-current = ":micro_utils.dokka:dokkaHtml/commonMain" data-filterable-set = ":micro_utils.dokka:dokkaHtml/commonMain" > < div class = "main-subrow keyValue " > < div class = "" > < span class = "inline-flex" > < div > < a href = "../on-presented.html" > < span > on< / span > < wbr > < / wbr > < span > < span > Presented< / span > < / span > < / a > < / div > < / span > < / div > < div > < / div > < / div > < / div > < div class = "table-row" data-filterable-current = ":micro_utils.dokka:dokkaHtml/commonMain" data-filterable-set = ":micro_utils.dokka:dokkaHtml/commonMain" > < div class = "main-subrow keyValue " > < div class = "" > < span class = "inline-flex" > < div > < a href = "../on-absent.html" > < span > on< / span > < wbr > < / wbr > < span > < span > Absent< / span > < / span > < / a > < / div > < / span > < / div > < div > < / div > < / div > < / div > < / div > < / div > < / div >
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< / div >
< div class = "tabbedcontent" >
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< div class = "tabs-section" tabs-section = "tabs-section" > < button class = "section-tab" data-active = "" data-togglable = "CONSTRUCTOR,TYPE,PROPERTY,FUNCTION" > Members< / button > < button class = "section-tab" data-togglable = "CONSTRUCTOR,TYPE,PROPERTY,FUNCTION,EXTENSION_PROPERTY,EXTENSION_FUNCTION" > Members & Extensions< / button > < / div >
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< div class = "tabs-section-body" >
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< div data-togglable = "TYPE" >
< h2 class = "" > Types< / h2 >
< div class = "table" > < a data-name = "-503622347%2FClasslikes%2F-1478683138" anchor-label = "Companion" id = "-503622347%2FClasslikes%2F-1478683138" data-filterable-set = ":micro_utils.dokka:dokkaHtml/commonMain" > < / a >
< div class = "table-row" data-filterable-current = ":micro_utils.dokka:dokkaHtml/commonMain" data-filterable-set = ":micro_utils.dokka:dokkaHtml/commonMain" >
< div class = "main-subrow keyValue " >
< div class = "" > < span class = "inline-flex" >
< div > < a href = "-companion/index.html" > < span > < span > Companion< / span > < / span > < / a > < / div >
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< span class = "anchor-wrapper" > < span class = "anchor-icon" pointing-to = "-503622347%2FClasslikes%2F-1478683138" > < / span >
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< div class = "copy-popup-wrapper " > < span class = "copy-popup-icon" > < / span > < span > Link copied to clipboard< / span > < / div >
< / span > < / span > < / div >
< div >
< div class = "title" >
< div class = "platform-hinted " data-platform-hinted = "data-platform-hinted" > < div class = "content sourceset-dependent-content" data-active = "" data-togglable = ":micro_utils.dokka:dokkaHtml/commonMain" > < div class = "symbol monospace" > < span class = "token keyword" > object < / span > < a href = "-companion/index.html" > Companion< / a > < / div > < / div > < / div >
< / div >
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< / div >
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< div data-togglable = "PROPERTY" >
< h2 class = "" > Properties< / h2 >
< div class = "table" > < a data-name = "-1373844350%2FProperties%2F-1478683138" anchor-label = "data" id = "-1373844350%2FProperties%2F-1478683138" data-filterable-set = ":micro_utils.dokka:dokkaHtml/commonMain" > < / a >
< div class = "table-row" data-filterable-current = ":micro_utils.dokka:dokkaHtml/commonMain" data-filterable-set = ":micro_utils.dokka:dokkaHtml/commonMain" >
< div class = "main-subrow keyValue " >
< div class = "" > < span class = "inline-flex" >
< div > < a href = "data.html" > < span > < span > data< / span > < / span > < / a > < / div >
< span class = "anchor-wrapper" > < span class = "anchor-icon" pointing-to = "-1373844350%2FProperties%2F-1478683138" > < / span >
< div class = "copy-popup-wrapper " > < span class = "copy-popup-icon" > < / span > < span > Link copied to clipboard< / span > < / div >
< / span > < / span > < / div >
< div >
< div class = "title" >
< div class = "platform-hinted " data-platform-hinted = "data-platform-hinted" > < div class = "content sourceset-dependent-content" data-active = "" data-togglable = ":micro_utils.dokka:dokkaHtml/commonMain" > < div class = "symbol monospace" > < span class = "token keyword" > < / span > < span class = "token keyword" > val < / span > < a href = "data.html" > data< / a > < span class = "token operator" > : < / span > < a href = "index.html" > T< / a > < span class = "token operator" > ?< / span > < / div > < / div > < / div >
< / div >
< / div >
< / div >
< / div >
< a data-name = "1174995806%2FProperties%2F-1478683138" anchor-label = "dataPresented" id = "1174995806%2FProperties%2F-1478683138" data-filterable-set = ":micro_utils.dokka:dokkaHtml/commonMain" > < / a >
< div class = "table-row" data-filterable-current = ":micro_utils.dokka:dokkaHtml/commonMain" data-filterable-set = ":micro_utils.dokka:dokkaHtml/commonMain" >
< div class = "main-subrow keyValue " >
< div class = "" > < span class = "inline-flex" >
< div > < a href = "data-presented.html" > < span > data< / span > < wbr > < / wbr > < span > < span > Presented< / span > < / span > < / a > < / div >
< span class = "anchor-wrapper" > < span class = "anchor-icon" pointing-to = "1174995806%2FProperties%2F-1478683138" > < / span >
< div class = "copy-popup-wrapper " > < span class = "copy-popup-icon" > < / span > < span > Link copied to clipboard< / span > < / div >
< / span > < / span > < / div >
< div >
< div class = "title" >
< div class = "platform-hinted " data-platform-hinted = "data-platform-hinted" > < div class = "content sourceset-dependent-content" data-active = "" data-togglable = ":micro_utils.dokka:dokkaHtml/commonMain" > < div class = "symbol monospace" > < span class = "token keyword" > < / span > < span class = "token keyword" > val < / span > < a href = "data-presented.html" > dataPresented< / a > < span class = "token operator" > : < / span > < a href = "https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html" > Boolean< / a > < / div > < / div > < / div >
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< div data-togglable = "EXTENSION_FUNCTION" >
< h2 class = "" > Functions< / h2 >
< div class = "table" > < a data-name = "266058348%2FFunctions%2F-1478683138" anchor-label = "dataOrElse" id = "266058348%2FFunctions%2F-1478683138" data-filterable-set = ":micro_utils.dokka:dokkaHtml/commonMain" > < / a >
< div class = "table-row" data-togglable = "EXTENSION_FUNCTION" data-filterable-current = ":micro_utils.dokka:dokkaHtml/commonMain" data-filterable-set = ":micro_utils.dokka:dokkaHtml/commonMain" >
< div class = "main-subrow keyValue " >
< div class = "" > < span class = "inline-flex" >
< div > < a href = "../data-or-else.html" > < span > data< / span > < wbr > < / wbr > < span > Or< / span > < wbr > < / wbr > < span > < span > Else< / span > < / span > < / a > < / div >
< span class = "anchor-wrapper" > < span class = "anchor-icon" pointing-to = "266058348%2FFunctions%2F-1478683138" > < / span >
< div class = "copy-popup-wrapper " > < span class = "copy-popup-icon" > < / span > < span > Link copied to clipboard< / span > < / div >
< / span > < / span > < / div >
< div >
< div class = "title" >
< div class = "platform-hinted " data-platform-hinted = "data-platform-hinted" > < div class = "content sourceset-dependent-content" data-active = "" data-togglable = ":micro_utils.dokka:dokkaHtml/commonMain" > < div class = "symbol monospace" > < span class = "token keyword" > inline < / span > < span class = "token keyword" > fun < / span > < span class = "token operator" > < < / span > < span class = "token keyword" > < / span > < a href = "../data-or-else.html" > T< / a > < span class = "token operator" > > < / span > < a href = "index.html" > Optional< / a > < span class = "token operator" > < < / span > < span class = "token keyword" > < / span > < a href = "../data-or-else.html" > T< / a > < span class = "token operator" > > < / span > < span class = "token punctuation" > .< / span > < a href = "../data-or-else.html" > < span class = "token function" > dataOrElse< / span > < / a > < span class = "token punctuation" > (< / span > < span class = "parameters " > < span class = "parameter " > block< span class = "token operator" > : < / span > < span class = "token punctuation" > (< / span > < span class = "token punctuation" > )< / span > < span class = "token operator" > -> < / span > < span class = "token keyword" > < / span > < a href = "../data-or-else.html" > T< / a > < / span > < / span > < span class = "token punctuation" > )< / span > < span class = "token operator" > : < / span > < a href = "../data-or-else.html" > T< / a > < / div > < div class = "brief " > < p class = "paragraph" > Returns < a href = "data.html" > Optional.data< / a > if < a href = "data-presented.html" > Optional.dataPresented< / a > of < span data-unresolved-link = "dev.inmo.micro_utils.common//&lt;this&gt;/#/PointingToCallableParameters(-1)/" > this< / span > is true, or call < a href = "../data-or-else.html" > block< / a > and returns the result of it< / p > < / div > < / div > < / div >
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< / div >
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< a data-name = "-740158821%2FFunctions%2F-1478683138" anchor-label = "dataOrNull" id = "-740158821%2FFunctions%2F-1478683138" data-filterable-set = ":micro_utils.dokka:dokkaHtml/commonMain" > < / a >
< div class = "table-row" data-togglable = "EXTENSION_FUNCTION" data-filterable-current = ":micro_utils.dokka:dokkaHtml/commonMain" data-filterable-set = ":micro_utils.dokka:dokkaHtml/commonMain" >
< div class = "main-subrow keyValue " >
< div class = "" > < span class = "inline-flex" >
< div > < a href = "../data-or-null.html" > < span > data< / span > < wbr > < / wbr > < span > Or< / span > < wbr > < / wbr > < span > < span > Null< / span > < / span > < / a > < / div >
< span class = "anchor-wrapper" > < span class = "anchor-icon" pointing-to = "-740158821%2FFunctions%2F-1478683138" > < / span >
< div class = "copy-popup-wrapper " > < span class = "copy-popup-icon" > < / span > < span > Link copied to clipboard< / span > < / div >
< / span > < / span > < / div >
< div >
< div class = "title" >
< div class = "platform-hinted " data-platform-hinted = "data-platform-hinted" > < div class = "content sourceset-dependent-content" data-active = "" data-togglable = ":micro_utils.dokka:dokkaHtml/commonMain" > < div class = "symbol monospace" > < span class = "token keyword" > < / span > < span class = "token keyword" > fun < / span > < span class = "token operator" > < < / span > < span class = "token keyword" > < / span > < a href = "../data-or-null.html" > T< / a > < span class = "token operator" > > < / span > < a href = "index.html" > Optional< / a > < span class = "token operator" > < < / span > < span class = "token keyword" > < / span > < a href = "../data-or-null.html" > T< / a > < span class = "token operator" > > < / span > < span class = "token punctuation" > .< / span > < a href = "../data-or-null.html" > < span class = "token function" > dataOrNull< / span > < / a > < span class = "token punctuation" > (< / span > < span class = "token punctuation" > )< / span > < span class = "token operator" > : < / span > < a href = "../data-or-null.html" > T< / a > < span class = "token operator" > ?< / span > < / div > < div class = "brief " > < p class = "paragraph" > Returns < a href = "data.html" > Optional.data< / a > if < a href = "data-presented.html" > Optional.dataPresented< / a > of < span data-unresolved-link = "dev.inmo.micro_utils.common//&lt;this&gt;/#/PointingToCallableParameters(-1)/" > this< / span > is true, or null otherwise< / p > < / div > < / div > < / div >
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< a data-name = "1247045035%2FFunctions%2F-1478683138" anchor-label = "dataOrThrow" id = "1247045035%2FFunctions%2F-1478683138" data-filterable-set = ":micro_utils.dokka:dokkaHtml/commonMain" > < / a >
< div class = "table-row" data-togglable = "EXTENSION_FUNCTION" data-filterable-current = ":micro_utils.dokka:dokkaHtml/commonMain" data-filterable-set = ":micro_utils.dokka:dokkaHtml/commonMain" >
< div class = "main-subrow keyValue " >
< div class = "" > < span class = "inline-flex" >
< div > < a href = "../data-or-throw.html" > < span > data< / span > < wbr > < / wbr > < span > Or< / span > < wbr > < / wbr > < span > < span > Throw< / span > < / span > < / a > < / div >
< span class = "anchor-wrapper" > < span class = "anchor-icon" pointing-to = "1247045035%2FFunctions%2F-1478683138" > < / span >
< div class = "copy-popup-wrapper " > < span class = "copy-popup-icon" > < / span > < span > Link copied to clipboard< / span > < / div >
< / span > < / span > < / div >
< div >
< div class = "title" >
< div class = "platform-hinted " data-platform-hinted = "data-platform-hinted" > < div class = "content sourceset-dependent-content" data-active = "" data-togglable = ":micro_utils.dokka:dokkaHtml/commonMain" > < div class = "symbol monospace" > < span class = "token keyword" > < / span > < span class = "token keyword" > fun < / span > < span class = "token operator" > < < / span > < span class = "token keyword" > < / span > < a href = "../data-or-throw.html" > T< / a > < span class = "token operator" > > < / span > < a href = "index.html" > Optional< / a > < span class = "token operator" > < < / span > < span class = "token keyword" > < / span > < a href = "../data-or-throw.html" > T< / a > < span class = "token operator" > > < / span > < span class = "token punctuation" > .< / span > < a href = "../data-or-throw.html" > < span class = "token function" > dataOrThrow< / span > < / a > < span class = "token punctuation" > (< / span > < span class = "parameters " > < span class = "parameter " > throwable< span class = "token operator" > : < / span > < a href = "https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-throwable/index.html" > Throwable< / a > < / span > < / span > < span class = "token punctuation" > )< / span > < span class = "token operator" > : < / span > < a href = "../data-or-throw.html" > T< / a > < / div > < div class = "brief " > < p class = "paragraph" > Returns < a href = "data.html" > Optional.data< / a > if < a href = "data-presented.html" > Optional.dataPresented< / a > of < span data-unresolved-link = "dev.inmo.micro_utils.common//&lt;this&gt;/#/PointingToCallableParameters(-1)/" > this< / span > is true, or throw < a href = "../data-or-throw.html" > throwable< / a > otherwise< / p > < / div > < / div > < / div >
< / div >
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< / div >
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< a data-name = "751780544%2FFunctions%2F-1478683138" anchor-label = "mapOnAbsent" id = "751780544%2FFunctions%2F-1478683138" data-filterable-set = ":micro_utils.dokka:dokkaHtml/commonMain" > < / a >
< div class = "table-row" data-togglable = "EXTENSION_FUNCTION" data-filterable-current = ":micro_utils.dokka:dokkaHtml/commonMain" data-filterable-set = ":micro_utils.dokka:dokkaHtml/commonMain" >
< div class = "main-subrow keyValue " >
< div class = "" > < span class = "inline-flex" >
< div > < a href = "../map-on-absent.html" > < span > map< / span > < wbr > < / wbr > < span > On< / span > < wbr > < / wbr > < span > < span > Absent< / span > < / span > < / a > < / div >
< span class = "anchor-wrapper" > < span class = "anchor-icon" pointing-to = "751780544%2FFunctions%2F-1478683138" > < / span >
< div class = "copy-popup-wrapper " > < span class = "copy-popup-icon" > < / span > < span > Link copied to clipboard< / span > < / div >
< / span > < / span > < / div >
< div >
< div class = "title" >
< div class = "platform-hinted " data-platform-hinted = "data-platform-hinted" > < div class = "content sourceset-dependent-content" data-active = "" data-togglable = ":micro_utils.dokka:dokkaHtml/commonMain" > < div class = "symbol monospace" > < span class = "token keyword" > inline < / span > < span class = "token keyword" > fun < / span > < span class = "token operator" > < < / span > < span class = "token keyword" > < / span > < a href = "../map-on-absent.html" > T< / a > < span class = "token punctuation" > , < / span > < span class = "token keyword" > < / span > < a href = "../map-on-absent.html" > R< / a > < span class = "token operator" > > < / span > < a href = "index.html" > Optional< / a > < span class = "token operator" > < < / span > < span class = "token keyword" > < / span > < a href = "../map-on-absent.html" > T< / a > < span class = "token operator" > > < / span > < span class = "token punctuation" > .< / span > < a href = "../map-on-absent.html" > < span class = "token function" > mapOnAbsent< / span > < / a > < span class = "token punctuation" > (< / span > < span class = "parameters " > < span class = "parameter " > block< span class = "token operator" > : < / span > < span class = "token punctuation" > (< / span > < span class = "token punctuation" > )< / span > < span class = "token operator" > -> < / span > < span class = "token keyword" > < / span > < a href = "../map-on-absent.html" > R< / a > < / span > < / span > < span class = "token punctuation" > )< / span > < span class = "token operator" > : < / span > < a href = "../map-on-absent.html" > R< / a > < span class = "token operator" > ?< / span > < / div > < div class = "brief " > < p class = "paragraph" > Will call < a href = "../map-on-absent.html" > block< / a > when data presented (< a href = "data-presented.html" > Optional.dataPresented< / a > == true)< / p > < / div > < / div > < / div >
< / div >
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< / div >
< / div >
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< a data-name = "1620645484%2FFunctions%2F-1478683138" anchor-label = "mapOnPresented" id = "1620645484%2FFunctions%2F-1478683138" data-filterable-set = ":micro_utils.dokka:dokkaHtml/commonMain" > < / a >
< div class = "table-row" data-togglable = "EXTENSION_FUNCTION" data-filterable-current = ":micro_utils.dokka:dokkaHtml/commonMain" data-filterable-set = ":micro_utils.dokka:dokkaHtml/commonMain" >
< div class = "main-subrow keyValue " >
< div class = "" > < span class = "inline-flex" >
< div > < a href = "../map-on-presented.html" > < span > map< / span > < wbr > < / wbr > < span > On< / span > < wbr > < / wbr > < span > < span > Presented< / span > < / span > < / a > < / div >
< span class = "anchor-wrapper" > < span class = "anchor-icon" pointing-to = "1620645484%2FFunctions%2F-1478683138" > < / span >
< div class = "copy-popup-wrapper " > < span class = "copy-popup-icon" > < / span > < span > Link copied to clipboard< / span > < / div >
< / span > < / span > < / div >
< div >
< div class = "title" >
< div class = "platform-hinted " data-platform-hinted = "data-platform-hinted" > < div class = "content sourceset-dependent-content" data-active = "" data-togglable = ":micro_utils.dokka:dokkaHtml/commonMain" > < div class = "symbol monospace" > < span class = "token keyword" > inline < / span > < span class = "token keyword" > fun < / span > < span class = "token operator" > < < / span > < span class = "token keyword" > < / span > < a href = "../map-on-presented.html" > T< / a > < span class = "token punctuation" > , < / span > < span class = "token keyword" > < / span > < a href = "../map-on-presented.html" > R< / a > < span class = "token operator" > > < / span > < a href = "index.html" > Optional< / a > < span class = "token operator" > < < / span > < span class = "token keyword" > < / span > < a href = "../map-on-presented.html" > T< / a > < span class = "token operator" > > < / span > < span class = "token punctuation" > .< / span > < a href = "../map-on-presented.html" > < span class = "token function" > mapOnPresented< / span > < / a > < span class = "token punctuation" > (< / span > < span class = "parameters " > < span class = "parameter " > block< span class = "token operator" > : < / span > < span class = "token punctuation" > (< / span > < span class = "token keyword" > < / span > < a href = "../map-on-presented.html" > T< / a > < span class = "token punctuation" > )< / span > < span class = "token operator" > -> < / span > < span class = "token keyword" > < / span > < a href = "../map-on-presented.html" > R< / a > < / span > < / span > < span class = "token punctuation" > )< / span > < span class = "token operator" > : < / span > < a href = "../map-on-presented.html" > R< / a > < span class = "token operator" > ?< / span > < / div > < div class = "brief " > < p class = "paragraph" > Will call < a href = "../map-on-presented.html" > block< / a > when data presented (< a href = "data-presented.html" > Optional.dataPresented< / a > == true)< / p > < / div > < / div > < / div >
< / div >
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< / div >
< / div >
< / div >
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< a data-name = "-1291152217%2FFunctions%2F-1478683138" anchor-label = "onAbsent" id = "-1291152217%2FFunctions%2F-1478683138" data-filterable-set = ":micro_utils.dokka:dokkaHtml/commonMain" > < / a >
< div class = "table-row" data-togglable = "EXTENSION_FUNCTION" data-filterable-current = ":micro_utils.dokka:dokkaHtml/commonMain" data-filterable-set = ":micro_utils.dokka:dokkaHtml/commonMain" >
< div class = "main-subrow keyValue " >
< div class = "" > < span class = "inline-flex" >
< div > < a href = "../on-absent.html" > < span > on< / span > < wbr > < / wbr > < span > < span > Absent< / span > < / span > < / a > < / div >
< span class = "anchor-wrapper" > < span class = "anchor-icon" pointing-to = "-1291152217%2FFunctions%2F-1478683138" > < / span >
< div class = "copy-popup-wrapper " > < span class = "copy-popup-icon" > < / span > < span > Link copied to clipboard< / span > < / div >
< / span > < / span > < / div >
< div >
< div class = "title" >
< div class = "platform-hinted " data-platform-hinted = "data-platform-hinted" > < div class = "content sourceset-dependent-content" data-active = "" data-togglable = ":micro_utils.dokka:dokkaHtml/commonMain" > < div class = "symbol monospace" > < span class = "token keyword" > inline < / span > < span class = "token keyword" > fun < / span > < span class = "token operator" > < < / span > < span class = "token keyword" > < / span > < a href = "../on-absent.html" > T< / a > < span class = "token operator" > > < / span > < a href = "index.html" > Optional< / a > < span class = "token operator" > < < / span > < span class = "token keyword" > < / span > < a href = "../on-absent.html" > T< / a > < span class = "token operator" > > < / span > < span class = "token punctuation" > .< / span > < a href = "../on-absent.html" > < span class = "token function" > onAbsent< / span > < / a > < span class = "token punctuation" > (< / span > < span class = "parameters " > < span class = "parameter " > block< span class = "token operator" > : < / span > < span class = "token punctuation" > (< / span > < span class = "token punctuation" > )< / span > < span class = "token operator" > -> < / span > < span class = "token keyword" > < / span > < a href = "https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html" > Unit< / a > < / span > < / span > < span class = "token punctuation" > )< / span > < span class = "token operator" > : < / span > < a href = "index.html" > Optional< / a > < span class = "token operator" > < < / span > < span class = "token keyword" > < / span > < a href = "../on-absent.html" > T< / a > < span class = "token operator" > > < / span > < / div > < div class = "brief " > < p class = "paragraph" > Will call < a href = "../on-absent.html" > block< / a > when data absent (< a href = "data-presented.html" > Optional.dataPresented< / a > == false)< / p > < / div > < / div > < / div >
< / div >
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< / div >
< / div >
< / div >
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< a data-name = "-1318449249%2FFunctions%2F-1478683138" anchor-label = "onPresented" id = "-1318449249%2FFunctions%2F-1478683138" data-filterable-set = ":micro_utils.dokka:dokkaHtml/commonMain" > < / a >
< div class = "table-row" data-togglable = "EXTENSION_FUNCTION" data-filterable-current = ":micro_utils.dokka:dokkaHtml/commonMain" data-filterable-set = ":micro_utils.dokka:dokkaHtml/commonMain" >
< div class = "main-subrow keyValue " >
< div class = "" > < span class = "inline-flex" >
< div > < a href = "../on-presented.html" > < span > on< / span > < wbr > < / wbr > < span > < span > Presented< / span > < / span > < / a > < / div >
< span class = "anchor-wrapper" > < span class = "anchor-icon" pointing-to = "-1318449249%2FFunctions%2F-1478683138" > < / span >
< div class = "copy-popup-wrapper " > < span class = "copy-popup-icon" > < / span > < span > Link copied to clipboard< / span > < / div >
< / span > < / span > < / div >
< div >
< div class = "title" >
< div class = "platform-hinted " data-platform-hinted = "data-platform-hinted" > < div class = "content sourceset-dependent-content" data-active = "" data-togglable = ":micro_utils.dokka:dokkaHtml/commonMain" > < div class = "symbol monospace" > < span class = "token keyword" > inline < / span > < span class = "token keyword" > fun < / span > < span class = "token operator" > < < / span > < span class = "token keyword" > < / span > < a href = "../on-presented.html" > T< / a > < span class = "token operator" > > < / span > < a href = "index.html" > Optional< / a > < span class = "token operator" > < < / span > < span class = "token keyword" > < / span > < a href = "../on-presented.html" > T< / a > < span class = "token operator" > > < / span > < span class = "token punctuation" > .< / span > < a href = "../on-presented.html" > < span class = "token function" > onPresented< / span > < / a > < span class = "token punctuation" > (< / span > < span class = "parameters " > < span class = "parameter " > block< span class = "token operator" > : < / span > < span class = "token punctuation" > (< / span > < span class = "token keyword" > < / span > < a href = "../on-presented.html" > T< / a > < span class = "token punctuation" > )< / span > < span class = "token operator" > -> < / span > < span class = "token keyword" > < / span > < a href = "https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html" > Unit< / a > < / span > < / span > < span class = "token punctuation" > )< / span > < span class = "token operator" > : < / span > < a href = "index.html" > Optional< / a > < span class = "token operator" > < < / span > < span class = "token keyword" > < / span > < a href = "../on-presented.html" > T< / a > < span class = "token operator" > > < / span > < / div > < div class = "brief " > < p class = "paragraph" > Will call < a href = "../on-presented.html" > block< / a > when data presented (< a href = "data-presented.html" > Optional.dataPresented< / a > == true)< / p > < / div > < / div > < / div >
< / div >
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< / div >
< / div >
< / div >
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< / div >
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< / div >
< / div >
< / div >
< div class = "footer" >
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< span class = "go-to-top-icon" > < a href = "#content" id = "go-to-top-link" > < / a > < / span > < span > © 2023 Copyright< / span > < span
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class="pull-right">< span > Generated by < / span > < a
href="https://github.com/Kotlin/dokka">< span > dokka< / span > < span class = "padded-icon" > < / span > < / a > < / span >
< / div >
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< / div >
< / div >
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< / div >
< / body >
< / html >
