| 1 | #### or short circuits
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| 2 | shopt -s ysh:upgrade
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| 3 |
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| 4 | var x = [1, 2]
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| 5 | if (true or x[3]) {
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| 6 | echo OK
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| 7 | }
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| 8 | ## STDOUT:
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| 9 | OK
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| 10 | ## END
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| 11 |
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| 12 | #### and short circuits
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| 13 | shopt -s ysh:upgrade
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| 14 |
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| 15 | var x = [1, 2]
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| 16 | if (false and x[3]) {
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| 17 | echo bad
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| 18 | } else {
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| 19 | echo OK
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| 20 | }
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| 21 |
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| 22 | ## STDOUT:
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| 23 | OK
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| 24 | ## END
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| 25 |
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| 26 | #### not operator behaves like Python
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| 27 |
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| 28 | # consistent with if statement, ternary if, and, or
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| 29 |
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| 30 | pp line (not "s")
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| 31 | pp line (not 3)
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| 32 | pp line (not 4.5)
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| 33 | pp line (not {})
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| 34 | pp line (not [])
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| 35 | pp line (not false)
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| 36 | pp line (not true)
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| 37 |
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| 38 | ## STDOUT:
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| 39 | (Bool) false
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| 40 | (Bool) false
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| 41 | (Bool) false
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| 42 | (Bool) true
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| 43 | (Bool) true
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| 44 | (Bool) true
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| 45 | (Bool) false
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| 46 | ## END
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| 47 |
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| 48 | #### not, and, or
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| 49 |
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| 50 | var a = not true
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| 51 | echo $a
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| 52 | var b = true and false
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| 53 | echo $b
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| 54 | var c = true or false
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| 55 | echo $c
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| 56 |
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| 57 | ## STDOUT:
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| 58 | false
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| 59 | false
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| 60 | true
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| 61 | ## END
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| 62 |
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| 63 |
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| 64 | #### and-or chains for typed data
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| 65 |
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| 66 | python2 -c 'print(None or "s")'
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| 67 | python2 -c 'print(None and "s")'
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| 68 |
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| 69 | python2 -c 'print("x" or "y")'
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| 70 | python2 -c 'print("x" and "y")'
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| 71 |
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| 72 | python2 -c 'print("" or "y")'
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| 73 | python2 -c 'print("" and "y")'
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| 74 |
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| 75 | python2 -c 'print(42 or 0)'
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| 76 | python2 -c 'print(42 and 0)'
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| 77 |
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| 78 | python2 -c 'print(0 or 42)'
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| 79 | python2 -c 'print(0 and 42)'
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| 80 |
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| 81 | python2 -c 'print(0.0 or 0.5)'
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| 82 | python2 -c 'print(0.0 and 0.5)'
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| 83 |
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| 84 | python2 -c 'print(["a"] or [])'
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| 85 | python2 -c 'print(["a"] and [])'
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| 86 |
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| 87 | python2 -c 'print({"d": 1} or {})'
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| 88 | python2 -c 'print({"d": 1} and {})'
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| 89 |
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| 90 | python2 -c 'print(0 or 0.0 or False or [] or {} or "OR")'
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| 91 | python2 -c 'print(1 and 1.0 and True and [5] and {"d":1} and "AND")'
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| 92 |
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| 93 | echo ---
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| 94 |
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| 95 | json write (null or "s")
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| 96 | json write (null and "s")
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| 97 |
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| 98 | echo $["x" or "y"]
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| 99 | echo $["x" and "y"]
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| 100 |
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| 101 | echo $["" or "y"]
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| 102 | echo $["" and "y"]
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| 103 |
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| 104 | echo $[42 or 0]
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| 105 | echo $[42 and 0]
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| 106 |
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| 107 | echo $[0 or 42]
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| 108 | echo $[0 and 42]
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| 109 |
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| 110 | echo $[0.0 or 0.5]
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| 111 | echo $[0.0 and 0.5]
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| 112 |
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| 113 | pp line (["a"] or [])
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| 114 | pp line (["a"] and [])
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| 115 |
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| 116 | pp line ({"d": 1} or {})
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| 117 | pp line ({"d": 1} and {})
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| 118 |
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| 119 | echo $[0 or 0.0 or false or [] or {} or "OR"]
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| 120 | echo $[1 and 1.0 and true and [5] and {"d":1} and "AND"]
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| 121 |
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| 122 | ## STDOUT:
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| 123 | s
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| 124 | None
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| 125 | x
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| 126 | y
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| 127 | y
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| 128 |
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| 129 | 42
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| 130 | 0
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| 131 | 42
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| 132 | 0
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| 133 | 0.5
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| 134 | 0.0
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| 135 | ['a']
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| 136 | []
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| 137 | {'d': 1}
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| 138 | {}
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| 139 | OR
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| 140 | AND
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| 141 | ---
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| 142 | "s"
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| 143 | null
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| 144 | x
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| 145 | y
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| 146 | y
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| 147 |
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| 148 | 42
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| 149 | 0
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| 150 | 42
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| 151 | 0
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| 152 | 0.5
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| 153 | 0.0
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| 154 | (List) ["a"]
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| 155 | (List) []
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| 156 | (Dict) {"d":1}
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| 157 | (Dict) {}
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| 158 | OR
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| 159 | AND
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| 160 | ## END
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| 161 |
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| 162 | #### or BashArray, or BashAssoc
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| 163 | declare -a array=(1 2 3)
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| 164 | pp line (array or 'yy')
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| 165 |
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| 166 | declare -A assoc=([k]=v)
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| 167 | pp line (assoc or 'zz')
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| 168 |
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| 169 | ## STDOUT:
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| 170 | {"type":"BashArray","data":{"0":"1","1":"2","2":"3"}}
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| 171 | {"type":"BashAssoc","data":{"k":"v"}}
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| 172 | ## END
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| 173 |
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| 174 | #### x if b else y
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| 175 | var b = true
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| 176 | var i = 42
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| 177 | var t = i+1 if b else i-1
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| 178 | echo $t
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| 179 | var f = i+1 if false else i-1
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| 180 | echo $f
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| 181 | ## STDOUT:
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| 182 | 43
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| 183 | 41
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| 184 | ## END
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| 185 |
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