How to use * operator in JOIN


laziness, impatience, and hubris
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by ravi45722 (Pilgrim)

on Jul 31, 2015 at 09:00 UTC ( [id://1136985]=perlquestion: print w/replies, xml )

Need Help??

ravi45722 has asked for the wisdom of the Perl Monks concerning the following question:

my $placeholders = join(',',('?') * 8);
[download]

I need an output of ?,?,?,?,?,?,?,? But its returning zero. I dont know where i mistaken. Plz correct it

Comment on How to use * operator in JOIN Download Code

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Re: How to use * operator in JOIN by Laurent_R (Canon) on Jul 31, 2015 at 09:11 UTC
I guess that you mean: `$placeholders = join(',',('?') x 8);` [download]	[reply] [d/l]
Re: How to use * operator in JOIN by johngg (Canon) on Jul 31, 2015 at 09:12 UTC
Use `x`, not `*`! $ perl -E 'say join q{,}, ( q{?} ) x 8' ?,?,?,?,?,?,?,? $ [download] Cheers, JohnGG	[reply] [d/l] [select]
Re: How to use * operator in JOIN by kennethk (Abbot) on Jul 31, 2015 at 14:39 UTC
What Laurent_R and johngg said. For documentation of the repetition operator, see Multiplicative Operators. #11929 First ask yourself `How would I do this without a computer?' Then have the computer do it the same way.	[reply]

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