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#stdlib
- m
marstran
04/04/2018, 2:54 PM - k
karelpeeters
04/04/2018, 2:55 PMClick on "source" at thw top of that page. - h
holgerbrandl
04/04/2018, 3:01 PMYep that’s the source of my confusion. - a
Aregev2
04/04/2018, 5:19 PM@gildor, That's what I mean. - a
Aregev2
04/04/2018, 5:21 PMI'm being forced to used listOf() - a
Aregev2
04/04/2018, 5:22 PMand also there are not constructors for mutableSet/Map - k
karelpeeters
04/04/2018, 5:29 PMWhat do you want the resulting map to look like? - a
Aregev2
04/04/2018, 5:41 PMnever mind - u
user
04/04/2018, 6:28 PM@ilya.gorbunov commented on @Aregev2’s file: What is the point of such constructor? These three equal key-value pairs will be collapsed to the single entry.https://kotlinlang.slack.com/files/U9HPANSRE/FA10HM0J0/image.png▾
- k
karelpeeters
04/04/2018, 6:31 PMI could see value in a constructor like this:
.Map(list) { f(it) } == list.map { it to f(it) }.toMap() - i
ilya.gorbunov
04/04/2018, 6:32 PMThere's associateBy for that:list.associateBy({ it }, { f(it) }) - k
karelpeeters
04/04/2018, 6:33 PMAh, for some reason I keep forgetting that function exists. Thanks! - k
karelpeeters
04/04/2018, 6:34 PMOne could argue there's also
for(0 until size).map { f(it) }
, but it doesn't matter much.List(size) { it } - i
ilya.gorbunov
04/04/2018, 6:35 PMWhen you use
you get a list of that size, when you use hypotheticalList(size) { }
I'm unsure what should you get.Map(size) { } - i
ilya.gorbunov
04/04/2018, 10:48 PMThreads
Did you know about
function? http://kotlinlang.org/api/latest/jvm/stdlib/kotlin.concurrent/thread.htmlthread { }Pointers (as mentioned in #kotlin-native)
What kind of pointers? Every instance of reference type is a pointer of some kind. Could you point to the discussion where it was mentioned?we can use Pair() or A to B similar to mapOf()
take a look at
function:associate(0 until size).associate { it to f(it) } - u
user
04/05/2018, 1:16 AM@gildor commented on @Aregev2’s file: Actually, it’s not a constructor, but builder function. I see what you mean, but not sure about you case. Could you show some real code when you need thishttps://kotlinlang.slack.com/files/U9HPANSRE/FA10HM0J0/image.png▾
- e
elect
04/16/2018, 8:30 AMI interpret it like: do all the element of the list satisfy the
? This is true for an empty list, ergo, checking if the list is empty is up to the userpredicate👍 2 - k
karelpeeters
04/16/2018, 8:31 AM - e
elect
04/20/2018, 7:36 AMI'd like to have a method that offers the it-h element as a receiver - e
elect
04/20/2018, 7:36 AM
andforEach
pass it as argumentonEach - e
elect
04/20/2018, 7:36 AMmaybe
?atEach - e
elect
04/20/2018, 7:38 AMCopy codeinline fun <T> Iterable<T>.atEach(action: T.() -> Unit): Unit { for (element in this) element.action() } - e
elect
04/20/2018, 7:39 AMwait, actually I want the collection itself returned - e
elect
04/20/2018, 7:40 AMCopy codeinline fun <T, C : Iterable<T>> C.atEach(action: T.() -> Unit): C { return apply { for (element in this) element.action() } } - m
marstran
04/20/2018, 7:41 AMThe implementation could just be
I think 😛onEach(action) - e
elect
04/20/2018, 7:41 AMthere is already - e
elect
04/20/2018, 7:41 AMbut it uses the argument instead the receiver - m
marstran
04/20/2018, 7:42 AMYes, my point is just that this works:Copy codeinline fun <T, C : Iterable<T>> C.atEach(action: T.() -> Unit): C = onEach(action)👍 1 - g
gildor
04/20/2018, 7:42 AMOr justCopy codeonEach { it.apply { doSomething() } } - e
elect
04/20/2018, 7:42 AMah yeah