Channels
#stdlib
- v
voddan
06/07/2017, 12:19 PMCould we list all kotlin-compiler warnings as string constants somewhere in stdlib? So that instead of
one would write@suppress("UNCHECKED_CAST")
. Apart from eliminating typing errors, it would greatly help with discoverability.@suppress(Warnings.UNCHECKED_CAST) - k
kirillrakhman
06/07/2017, 12:20 PMall compiler errors should have corresponding intentions for adding the
annotations@Supress - k
kirillrakhman
06/07/2017, 12:20 PMin which cases do you need to type them manually? - m
mg6maciej
06/07/2017, 12:21 PMI hope compiler <errors> do not let you suppress them 🙂 - k
kirillrakhman
06/07/2017, 12:21 PMyes, warnings - v
voddan
06/07/2017, 12:23 PMThe initial message: - v
voddan
06/07/2017, 12:24 PMI agree that suppressing
is kinda strangeThis cast can never succeed - k
kirillrakhman
06/07/2017, 12:24 PM@User uploaded a file:grafik.png▾
- v
voddan
06/07/2017, 12:27 PMOk, I think I'm dropping the proposal with a
tag 😄no one cares - k
kirillrakhman
06/07/2017, 12:28 PMwith IDEA having so many features, it's easy to oversee some of them - e
enleur
06/07/2017, 12:39 PMis there any function to split string to ranges by length? “1234567”.split(3) == listOf(“123",“456”,“7") - m
mg6maciej
06/07/2017, 12:41 PMNo, you'll have to add such extension yourself. Here's a version that works on list instead of string. Should be easy to modify: https://github.com/mg6maciej/fluffy-octo-rotary-phone/blob/develop/app/src/main/java/pl/mg6/likeornot/commons/Collections.kt👍 1 - i
ilya.gorbunov
06/07/2017, 12:51 PM@enleur It will be included in 1.2: https://github.com/Kotlin/KEEP/blob/master/proposals/stdlib/window-sliding.md#description💪 3K 3 - t
thomasnield
06/08/2017, 2:04 AMWould there be any benefit giving the
package in Java 8 some syntactic sugar?java.time.* - t
thomasnield
06/08/2017, 2:04 AMval janDays = LocalDate.of(2017,1,1)..LocalDate.of(2017,1,31) - j
jw
06/11/2017, 2:52 AMam i missing something that easily allows me to identify duplicates in a collection? - j
jw
06/11/2017, 2:52 AMother than the "normal" way to do it by creating a set, a mutable list, and iterate+remove - j
jw
06/11/2017, 2:53 AMthere's
, but no one-liner for the oppositedistinct() - j
jw
06/11/2017, 2:54 AMprecedent for
then, maybe?duplicates() - j
jw
06/11/2017, 2:56 AMall the ways using the current operators are super allocation heavy - i
ilya.gorbunov
06/11/2017, 3:32 AM@jw Not a one-liner, but has minimal cost of allocations, and returns early:Copy codeval list = listOf(1, 2, 3, 4, 6, 2) val hasDuplicates = mutableSetOf<Int>().let { uniques -> list.any { uniques.add(it).not() } } - j
jw
06/11/2017, 3:33 AMi'm specifically looking for a Collection / Set of the duplicate elements in this case - j
jw
06/11/2017, 3:34 AMright now i just didCopy codeval mutableSelf = toMutableList() toSet().forEach { mutableSelf.remove(it) } return mutableSelf.toSet() - i
ilya.gorbunov
06/11/2017, 3:35 AMlist.groupingBy { it }.eachCount().filter { it.value > 1 }.keys - j
jw
06/11/2017, 3:36 AMhmm that's one of the ones that i thought would be prohibitively expensive - j
jw
06/11/2017, 3:37 AMi mean i guess mine's not that great since i'm removing randomly from an ArrayList - j
jw
06/11/2017, 3:38 AMan more optimal implementation would just write tombstones/nulls and then collect at the end - j
jw
06/11/2017, 3:39 AMoh wow i guess groupingBy might not be that bad... - j
jw
06/11/2017, 3:39 AMoh except
makes the mapeachCount() - i
ilya.gorbunov
06/11/2017, 3:40 AMAt least one map or set is required for this operation