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literal array indices (#11424)

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Jasper Jenkins 2019-06-18 05:16:33 -07:00 • committed by Andreas Rumpf
commit 8ee0f14ab6
5 changed files with 44 additions and 4 deletions
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9
tests/array/tarray.nim
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@ -548,3 +548,12 @@ block t3899:
x.a[i]
const c = O(a: [1.0,2.0])
echo c[2]
block arrayLiterals:
type ABC = enum A, B, C
template Idx[IdxT, ElemT](arr: array[IdxT, ElemT]): untyped = IdxT
doAssert [A: 0, B: 1].Idx is range[A..B]
doAssert [A: 0, 1, 3].Idx is ABC
doAssert [1: 2][1] == 2
doAssert [-1'i8: 2][-1] == 2
doAssert [-1'i8: 2, 3, 4, 5].Idx is range[-1'i8..2'i8]