[parenscript-devel] Bug with ==
Daniel Gackle
danielgackle at gmail.com
Tue Mar 2 21:59:50 UTC 2010
(let ((x 10) (y 10) (z 10))
(= x y z))
is true Common Lisp, but the PS equivalent...
var x = 10;
var y = 10;
var z = 10;
x == y == z;
... is false. The left operand of the second == is actually x==y, which
evalutes to true, and true==z of course is false. An equivalent in CL might
be:
(equal (equal x y) z)
Perverse side note: the above example doesn't work if you assign 1 to the
variables because in JS, the following is true:
1 == true
I didn't know this. JS still manages to shock me sometimes.
Daniel
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