Short-circuit evaluation: Difference between revisions
Added Wren
(Added Wren) |
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T F OR T a()
T T OR T a()
</pre>
=={{header|Wren}}==
Wren has the '''&&''' and '''||''' short-circuiting operators found in many C family languages.
<lang ecmascript>var a = Fn.new { |bool|
System.print(" a called")
return bool
}
var b = Fn.new { |bool|
System.print(" b called")
return bool
}
var bools = [ [true, true], [true, false], [false, true], [false, false] ]
for (bool in bools) {
System.print("a = %(bool[0]), b = %(bool[1]), op = && :")
a.call(bool[0]) && b.call(bool[1])
System.print()
}
for (bool in bools) {
System.print("a = %(bool[0]), b = %(bool[1]), op = || :")
a.call(bool[0]) || b.call(bool[1])
System.print()
}</lang>
{{out}}
<pre>
a = true, b = true, op = && :
a called
b called
a = true, b = false, op = && :
a called
b called
a = false, b = true, op = && :
a called
a = false, b = false, op = && :
a called
a = true, b = true, op = || :
a called
a = true, b = false, op = || :
a called
a = false, b = true, op = || :
a called
b called
a = false, b = false, op = || :
a called
b called
</pre>
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