Channels
#stdlib
- m
marcinmoskala
03/03/2016, 7:43 PMval m1 = mapOf('a' to 1) val m2 = mapOf('a' to 1) println(m1 + m2) - m
marcinmoskala
03/03/2016, 7:43 PMgive - m
marcinmoskala
03/03/2016, 7:43 PM{a=1} - m
marcinmoskala
03/03/2016, 7:43 PMThis is upgrade beheviour - m
marcinmoskala
03/03/2016, 7:43 PMfuck, update - m
marcinmoskala
03/03/2016, 7:44 PM - m
marcinmoskala
03/03/2016, 7:44 PMBut what I except from map + map is that each element with the same key will be added - m
marcinmoskala
03/03/2016, 7:45 PMLike that: val m1 = mapOf('a' to 1) val m2 = mapOf('a' to 1) assertEquals(m1 + m2, mapOf('a' to 2)) - m
marcinmoskala
03/03/2016, 7:46 PMand val m1 = mapOf(1 to 1, 2 to 2) val m2 = mapOf(2 to 1, 3 to 2) assertEquals(m1 + m2, mapOf(1 to 1, 2 to 3, 3 to 2)) - m
marcinmoskala
03/03/2016, 7:46 PMand that: assertEquals(m2, m1 + m2 - m1) assertEquals(m1, m1 + m2 - m2) - m
marcinmoskala
03/03/2016, 7:46 PMthis would be intuitive - m
mplatvoet
03/03/2016, 7:50 PMAnd what does the following do?Copy codeval m1 = mapOf('a' to Person(“Adam”)) val m2 = mapOf('a' to Person(“Eva”)) assertEquals(m1 + m2, mapOf('a' to ??? )) - c
cbruegg
03/03/2016, 8:00 PM@marcinmoskala: Please use snippets to post code or at least use backticks simple smile - m
marcinmoskala
03/03/2016, 8:07 PM"AdamEva" - m
marcinmoskala
03/03/2016, 8:13 PMBut this beheviour is secoundary. The point is that update shoulden't be a +. It is really confusing - m
mplatvoet
03/03/2016, 8:15 PMShouldn’t be called
either...update - m
mplatvoet
03/03/2016, 8:17 PMand the point is of course that naming is always opinionated, as long as it’s consistent within the language and platform it’s fine - c
cbruegg
03/04/2016, 11:37 PMOnce again I've missed a
function today 😄 I think I've found a neat one-liner (I'd bet someone else already discovered it though) to implement it. Would you like me to open a PR or are you not currently interest in such a function?Sequence<T>.peekinline fun <T> Sequence<T>.peek(crossinline f: (T) -> Unit): Sequence<T> = map { f(it); it } - v
vmironov
03/04/2016, 11:41 PMreally miss
toopeek - v
vmironov
03/04/2016, 11:41 PM+1 for having it in stdlib - v
vmironov
03/04/2016, 11:41 PMas well ascollect - v
vmironov
03/04/2016, 11:41 PMCopy codeinline fun <T, R> Sequence<T>.collect(collection: R, collector: (R, T) -> Unit): R { return fold(collection) { accumulator, value -> collector(accumulator, value) accumulator } } - j
jw
03/05/2016, 4:14 AMthere's either already an issue filed or i filed one - j
jw
03/05/2016, 4:15 AM - m
marcinmoskala
03/05/2016, 6:06 AM+1 for peek simple smile - m
marcinmoskala
03/05/2016, 6:13 AMand for collect. But I would prefer to have both of them for Iterable - v
voddan
03/05/2016, 8:24 AM@cgrinds: what does
do? Can't google it you version doespeek
if I am not mistakeniter.apply { forEach(f) } - v
voddan
03/05/2016, 8:27 AM@vmironov: can't you use
for exactly that? https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.collections/map-to.htmlmapTo - v
voddan
03/05/2016, 8:29 AMI guess
works with anycollect
, not only acollector
. How often do you need that option?MutableCollection - f
fellshard
03/05/2016, 8:32 AMPeek is generally a function that applies a consumer to each element of a collection without modifying the collection. Useful for functions with orthogonal side effects, such as logging or printing, and allows you to chain into other standard collection calls.