Re^3: Little annoying mistakes ... of others

Wow, I am writing down the examples as test cases but I can't figure out why is the second example always true?

could you please explain?

Comment on Re^3: Little annoying mistakes ... of others

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Re^4: Little annoying mistakes ... of others by jeffa (Bishop) on Dec 29, 2008 at 14:16 UTC
I think this: `print "$arg matches\n" if grep $arg, @valid;` [download] Is equivalent to this: `print "$arg matches\n" if grep { $arg } @valid;` [download] So as long as @valid and $arg are not false, then the match will also be true. (If $arg is 0 (zero) then the second example will not always be true.) jeffa L-LL-L--L-LL-L--L-LL-L-- -R--R-RR-R--R-RR-R--R-RR B--B--B--B--B--B--B--B-- H---H---H---H---H---H--- (the triplet paradiddle with high-hat)	[reply] [d/l] [select]

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Re^4: Little annoying mistakes ... of others
by jeffa (Bishop) on Dec 29, 2008 at 14:16 UTC

I think this:

print "$arg matches\n" if grep $arg, @valid;
[download]

Is equivalent to this:

print "$arg matches\n" if grep { $arg } @valid;
[download]

and

jeffa

L-LL-L--L-LL-L--L-LL-L--
-R--R-RR-R--R-RR-R--R-RR
B--B--B--B--B--B--B--B--
H---H---H---H---H---H---
(the triplet paradiddle with high-hat)