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introduce capture macro (#12712)

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capture works for more cases than `closureScope`.
This commit is contained in:
Judd 2019-12-10 20:16:37 +08:00 • committed by Andreas Rumpf
commit 56cf3403b4
3 changed files with 41 additions and 0 deletions
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12
tests/closure/tcapture.nim Normal file
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@ -0,0 +1,12 @@
discard """
output: '''
to be, or not to be'''
joinable: false
"""
import sequtils, sugar
let m = @[proc (s: string): string = "to " & s, proc (s: string): string = "not to " & s]
var l = m.mapIt(capture([it], proc (s: string): string = it(s)))
let r = l.mapIt(it("be"))
echo r[0] & ", or " & r[1]