Re: Re: Hashing: Argument "" isn't numeric in sort

The keys look something like 465.274. The keys used to be numeric and then they became strings. Thanks for catching this for me.
-P0w3rK!d

Comment on Re: Re: Hashing: Argument "" isn't numeric in sort

Replies are listed 'Best First'.
Re: Re: Re: Hashing: Argument "" isn't numeric in sort by Joost (Canon) on May 20, 2003 at 15:16 UTC
It's quite impossible to change a hash-key, they are constant strings - strictly speaking they cannot even be numbers. The string "465.274" is converted to a number when needed by perl, so that should not give you this warning, as the following code shows: `#!/usr/bin/perl -wl use strict; my @array = qw(465.274 21893.32 72.37); # qw creates quoted strings print for (sort {$a <=> $b} @array);` [download] output: `72.37 465.274 21893.32` [download] No warnings at all. Joost `-- #!/usr/bin/perl -np BEGIN{@ARGV=$0}s(^([^=].*)\|=)()s; =Just another perl hacker\` [download]	[reply] [d/l] [select]

Replies are listed 'Best First'.

The string "465.274" is converted to a number when needed by perl, so that should not give you this warning, as the following code shows:

#!/usr/bin/perl -wl
use strict;

my @array = qw(465.274 21893.32 72.37); # qw creates quoted strings
print for (sort {$a <=> $b} @array);
[download]

output:

72.37
465.274
21893.32
[download]

No warnings at all.

Joost

-- 
#!/usr/bin/perl -np
BEGIN{@ARGV=$0}s(^([^=].*)|=)()s;
=Just another perl hacker\
[download]