Re^5: Do I need to use defined?

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Re^6: Do I need to use defined? by afoken (Chancellor) on Sep 07, 2017 at 07:04 UTC
... Read my posting again. I'm using list context in both cases. Or just read "Truth and Falsehood" in perlsyn: The number 0, the strings `'0'` and `""` , the empty list `()` , and `undef` are all false in a boolean context. All other values are true. Negation of a true value by ! or not returns a special false value. When evaluated as a string it is treated as `""` , but as a number, it is treated as 0. Most Perl operators that return true or false behave this way. Alexander -- Today I will gladly share my knowledge and experience, for there are no sweeter words than "I told you so". ;-)	[reply] [d/l] [select]
Re^7: Do I need to use defined? by Anonymous Monk on Sep 07, 2017 at 07:22 UTC
Re^5: What could make "()" a good value for boolean false?	[reply]
Re^7: Do I need to use defined? by Anonymous Monk on Sep 07, 2017 at 07:33 UTC
I'm using list context in both cases. No you're not. `or` puts its left-hand argument in scalar context.	[reply]