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Add clarification about the lazy nature of Sequence.plus and Sequence.minus operations.

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Ilya Gorbunov
2015-07-16 16:14:37 +03:00
parent 8ac613dd67
commit 2c396cf28e
2 changed files with 60 additions and 6 deletions
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libraries/stdlib/src/generated/_Generators.kt
+12
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@@ -385,6 +385,8 @@ public fun <T> Iterable<T>.minus(array: Array<out T>): List<T> {
/**
* Returns a sequence containing all elements of original sequence except the elements contained in the given [array].
* Note that the source sequence and the array being subtracted are iterated only when an `iterator` is requested from
* the resulting sequence. Changing any of them between successive calls to `iterator` may affect the result.
*/
public fun <T> Sequence<T>.minus(array: Array<out T>): Sequence<T> {
if (array.isEmpty()) return this
@@ -417,6 +419,8 @@ public fun <T> Iterable<T>.minus(collection: Iterable<T>): List<T> {
/**
* Returns a sequence containing all elements of original sequence except the elements contained in the given [collection].
* Note that the source sequence and the collection being subtracted are iterated only when an `iterator` is requested from
* the resulting sequence. Changing any of them between successive calls to `iterator` may affect the result.
*/
public fun <T> Sequence<T>.minus(collection: Iterable<T>): Sequence<T> {
return object: Sequence<T> {
@@ -486,6 +490,8 @@ public fun <T> Iterable<T>.minus(sequence: Sequence<T>): List<T> {
/**
* Returns a sequence containing all elements of original sequence except the elements contained in the given [sequence].
* Note that the source sequence and the sequence being subtracted are iterated only when an `iterator` is requested from
* the resulting sequence. Changing any of them between successive calls to `iterator` may affect the result.
*/
public fun <T> Sequence<T>.minus(sequence: Sequence<T>): Sequence<T> {
return object: Sequence<T> {
@@ -747,6 +753,8 @@ public fun <T> Iterable<T>.plus(array: Array<out T>): List<T> {
/**
* Returns a sequence containing all elements of original sequence and then all elements of the given [array].
* Note that the source sequence and the array being added are iterated only when an `iterator` is requested from
* the resulting sequence. Changing any of them between successive calls to `iterator` may affect the result.
*/
public fun <T> Sequence<T>.plus(array: Array<out T>): Sequence<T> {
return this.plus(array.asList())
@@ -791,6 +799,8 @@ public fun <T> Iterable<T>.plus(collection: Iterable<T>): List<T> {
/**
* Returns a sequence containing all elements of original sequence and then all elements of the given [collection].
* Note that the source sequence and the collection being added are iterated only when an `iterator` is requested from
* the resulting sequence. Changing any of them between successive calls to `iterator` may affect the result.
*/
public fun <T> Sequence<T>.plus(collection: Iterable<T>): Sequence<T> {
return sequenceOf(this, collection.asSequence()).flatten()
@@ -866,6 +876,8 @@ public fun <T> Iterable<T>.plus(sequence: Sequence<T>): List<T> {
/**
* Returns a sequence containing all elements of original sequence and then all elements of the given [sequence].
* Note that the source sequence and the sequence being added are iterated only when an `iterator` is requested from
* the resulting sequence. Changing any of them between successive calls to `iterator` may affect the result.
*/
public fun <T> Sequence<T>.plus(sequence: Sequence<T>): Sequence<T> {
return sequenceOf(this, sequence).flatten()