From 5762b1d75c55900268e1abd0e83aaaa9fd43e9fe Mon Sep 17 00:00:00 2001 From: Juan Carlos Date: Wed, 5 May 2021 02:46:42 -0300 Subject: Add copyWithin for JavaScript (#17937) * Add jscore.copyWithin for seq and array * Shallow copy mention docs --- lib/js/jscore.nim | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'lib/js') diff --git a/lib/js/jscore.nim b/lib/js/jscore.nim index 693e50799..61c188431 100644 --- a/lib/js/jscore.nim +++ b/lib/js/jscore.nim @@ -110,3 +110,16 @@ proc parse*(l: JsonLib, s: cstring): JsRoot {.importcpp.} since (1, 5): func debugger*() {.importjs: "debugger@".} ## https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/debugger + + func copyWithin*[T](self: openArray[T]; target: int): seq[T] {.importjs: "#.copyWithin(#)".} + func copyWithin*[T](self: openArray[T]; target, start: int): seq[T] {.importjs: "#.copyWithin(#, #)".} + func copyWithin*[T](self: openArray[T]; target, start, ends: int): seq[T] {.importjs: "#.copyWithin(#, #, #)".} = + ## https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/copyWithin + ## `copyWithin` uses shallow copy. + runnableExamples: + assert ['a', 'b', 'c', 'd', 'e'].copyWithin(0, 3, 4) == @['d', 'b', 'c', 'd', 'e'] + assert ['a', 'b', 'c', 'd', 'e'].copyWithin(1, 3) == @['a', 'd', 'e', 'd', 'e'] + assert [1, 2, 3, 4, 5].copyWithin(-2) == @[1, 2, 3, 1, 2] + assert [1, 2, 3, 4, 5].copyWithin(0, 3) == @[4, 5, 3, 4, 5] + assert [1, 2, 3, 4, 5].copyWithin(0, 3, 4) == @[4, 2, 3, 4, 5] + assert [1, 2, 3, 4, 5].copyWithin(-2, -3, -1) == @[1, 2, 3, 3, 4] -- cgit 1.4.1-2-gfad0