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That's the problem I had with perl. Sometimes one plus one is two, sometimes it's eleven, and the interpreter doesn't always do what you expect.
by gozur88 11y ago
That's the problem I had with perl. Sometimes one plus one is two, sometimes it's eleven, and the interpreter doesn't always do what you expect.
- kanatohodets 11y agoPerl has distinct operators for string concatenation and numeric addition (as well as string comparison/numeric comparison): $ perl -E 'say "plus: ", 1 + "1"' plus: 2 $ perl -E 'say "concat: ", 1 . "1"' concat: 11 There is some type funkiness: a Perl variable can have both string and numeric components. However, which one is in use is only a problem in serializers (JSON, etc.) -- in normal usage you can rely on choosing the right operator for the type at hand.