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KT-20357: Add samples for associate* functions (#2798)

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* KT-20357: Add samples for functions related to associate

* KT-20357: Use same fib function for both samples

* KT-20357: Use examples with duplicate keys and simplify examples with primitives

* KT-20357: Use primitive samples for all arrays

* KT-20357: Use String splitting example to better illustrate the use for associate over associateBy with a valueSelector
This commit is contained in:
Dat Trieu
2019-11-29 14:54:02 +01:00
committed by ilya-g
parent d2e5432b2d
commit f334ad2ffc
8 changed files with 420 additions and 0 deletions
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libraries/tools/kotlin-stdlib-gen/src/templates/Snapshots.kt
+34
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@@ -205,6 +205,11 @@ object Snapshots : TemplateGroupBase() {
The returned map preserves the entry iteration order of the original ${f.collection}.
"""
}
sample(when (family) {
CharSequences -> "samples.text.Strings.associate"
ArraysOfObjects, ArraysOfPrimitives -> "samples.collections.Arrays.Transformations.associateArrayOfPrimitives"
else -> "samples.collections.Collections.Transformations.associate"
})
body {
"""
val capacity = mapCapacity(collectionSizeOrDefault(10)).coerceAtLeast(16)
@@ -247,6 +252,11 @@ object Snapshots : TemplateGroupBase() {
If any of two pairs would have the same key the last one gets added to the map.
"""
}
sample(when (family) {
CharSequences -> "samples.text.Strings.associateTo"
ArraysOfObjects, ArraysOfPrimitives -> "samples.collections.Arrays.Transformations.associateArrayOfPrimitivesTo"
else -> "samples.collections.Collections.Transformations.associateTo"
})
body {
"""
for (element in this) {
@@ -273,6 +283,11 @@ object Snapshots : TemplateGroupBase() {
The returned map preserves the entry iteration order of the original ${f.collection}.
"""
}
sample(when (family) {
CharSequences -> "samples.text.Strings.associateBy"
ArraysOfObjects, ArraysOfPrimitives -> "samples.collections.Arrays.Transformations.associateArrayOfPrimitivesBy"
else -> "samples.collections.Collections.Transformations.associateBy"
})
returns("Map<K, T>")
// Collection size helper methods are private, so we fall back to the calculation from HashSet's Collection
@@ -319,6 +334,11 @@ object Snapshots : TemplateGroupBase() {
If any two ${f.element.pluralize()} would have the same key returned by [keySelector] the last one gets added to the map.
"""
}
sample(when (family) {
CharSequences -> "samples.text.Strings.associateByTo"
ArraysOfObjects, ArraysOfPrimitives -> "samples.collections.Arrays.Transformations.associateArrayOfPrimitivesByTo"
else -> "samples.collections.Collections.Transformations.associateByTo"
})
body {
"""
for (element in this) {
@@ -345,6 +365,11 @@ object Snapshots : TemplateGroupBase() {
The returned map preserves the entry iteration order of the original ${f.collection}.
"""
}
sample(when (family) {
CharSequences -> "samples.text.Strings.associateByWithValueTransform"
ArraysOfObjects, ArraysOfPrimitives -> "samples.collections.Arrays.Transformations.associateArrayOfPrimitivesByWithValueTransform"
else -> "samples.collections.Collections.Transformations.associateByWithValueTransform"
})
returns("Map<K, V>")
/**
@@ -396,6 +421,11 @@ object Snapshots : TemplateGroupBase() {
If any two ${f.element.pluralize()} would have the same key returned by [keySelector] the last one gets added to the map.
"""
}
sample(when (family) {
CharSequences -> "samples.text.Strings.associateByToWithValueTransform"
ArraysOfObjects, ArraysOfPrimitives -> "samples.collections.Arrays.Transformations.associateArrayOfPrimitivesByToWithValueTransform"
else -> "samples.collections.Collections.Transformations.associateByToWithValueTransform"
})
body {
"""
for (element in this) {
@@ -458,6 +488,10 @@ object Snapshots : TemplateGroupBase() {
If any two ${f.element.pluralize()} are equal, the last one overwrites the former value in the map.
"""
}
sample(when (family) {
CharSequences -> "samples.text.Strings.associateWithTo"
else -> "samples.collections.Collections.Transformations.associateWithTo"
})
body {
"""
for (element in this) {