76 lines
1.2 KiB
CoffeeScript
76 lines
1.2 KiB
CoffeeScript
# Slice.
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array = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
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a = array[7..9]
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b = array[2...4]
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result = a.concat(b).join(' ')
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ok result is "7 8 9 2 3"
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a = [0, 1, 2, 3, 4, 5, 6, 7]
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deepEqual a[2...6], [2, 3, 4, 5]
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# Ranges.
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countdown = [10..1].join(' ')
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ok countdown is "10 9 8 7 6 5 4 3 2 1"
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a = 1
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b = 5
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nums = [a...b]
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ok nums.join(' ') is '1 2 3 4'
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b = -5
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nums = [a..b]
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ok nums.join(' ') is '1 0 -1 -2 -3 -4 -5'
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# Expression-based range.
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array = [(1+5)..1+9]
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ok array.join(' ') is "6 7 8 9 10"
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array = [5..1]
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ok array.join(' ') is '5 4 3 2 1'
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array = [30...0]
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ok (len = array.length) is 30
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ok array[len - 1] is 1
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# String slicing (at least on Node).
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hello = "Hello World"
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ok hello[1...1] is ""
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ok hello[1..1] is "e"
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ok hello[1...5] is "ello"
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ok hello[0..4] is "Hello"
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# Splice literals.
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array = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
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array[5..10] = [0, 0, 0]
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ok array.join(' ') is '0 1 2 3 4 0 0 0'
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# Slices and splices that omit their beginning or end.
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array = [0..10]
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ok array[7..].join(' ') is '7 8 9 10'
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ok array[-2..].join(' ') is '9 10'
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ok array[...3].join(' ') is '0 1 2'
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ok array[..-5].join(' ') is '0 1 2 3 4 5 6'
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array[3..] = [9, 8, 7]
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ok array.join(' ') is '0 1 2 9 8 7'
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array[...3] = [7, 8, 9]
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ok array.join(' ') is '7 8 9 9 8 7'
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