Perl, Check for valid hex value

Check for valid hex value

Author	Message
Edward J. D'Avigno #1 / 4	Check for valid hex value How can I check that a value entered is a valid hex value? The entry is up to 16 hex digits long and I need to ensure it only contains the characters 0123456789abcdf. Thanks for the help, Ed
Tue, 17 Feb 2004 18:02:07 GMT

Mark Jason Domin #2 / 4	Check for valid hex value Quote: >How can I check that a value entered is a valid hex value? The entry is >up to 16 hex digits long and I need to ensure it only contains the >characters 0123456789abcdf. if ($value =~ /[^0-9a-f]/) { # it contains a bad character } elsif (length($value) > 16) { # it is too long } else { # it's good } rd ($p{$_})&6];$p{$_}=/ ^$P/ix?$P:close$_}keys%p}p;p;p;p;p;map{$p{$_}=~/^[P.]/&& close$_}%p;wait until$?;map{/^r/&&<$_>}%p;$_=$d[$q];sleep rand(2)if/\S/;print
Tue, 17 Feb 2004 18:16:13 GMT

gnar #3 / 4	Check for valid hex value Quote: >How can I check that a value entered is a valid hex value? The entry is >up to 16 hex digits long and I need to ensure it only contains the >characters 0123456789abcdf. this looks like a good problem for a regexp. see perldoc perlre perldoc perlop let us know if you have problems with it gnari
Tue, 17 Feb 2004 23:16:36 GMT

Heinz Ekke #4 / 4	Check for valid hex value Quote: > How can I check that a value entered is a valid hex value? <snip> map { print "$_: invalid\n" unless eval "0x$_" } qw( 8a 4711 gh b deadbeef 9g ); </snip> errors. Quote: > Thanks for the help, > Ed Heinz
Wed, 18 Feb 2004 23:05:06 GMT

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