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Re: transliterate a sub-string

by johngg (Abbot)
on Jan 15, 2013 at 23:07 UTC ( #1013469=note: print w/replies, xml ) Need Help??


in reply to transliterate a sub-string

As you don't show how you have combined the two it is difficult to judge. This seems fairly straightforward and not too clumsy. I'm not sure how that might be condensed further.

$ perl -E ' > $str = q{ABCDEFGHIJK}; > substr( $str, 3, 3 ) =~ tr{A-Z}{a-z}; > say $str;' ABCdefGHIJK

I hope this is helpful.

Cheers,

JohnGG

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Re^2: transliterate a sub-string
by grondilu (Friar) on Jan 16, 2013 at 07:18 UTC

    This is neat, but was certainly not obvious. Maybe it is worth reminding that indeed substr can be used as a lvalue, as explicitely said in its perldoc:

    You can use the substr() function as an lvalue, in which case EXPR must itself be an lvalue. If you assign something shorter than LENGTH, the string will shrink, and if you assign something longer than LENGTH, the string will grow to accommodate it. To keep the string the same length, you may need to pad or chop your value using "sprintf".

      as explicitely said in its perldoc:

      Said and shown :)

      my $name = 'fred'; substr($name, 4) = 'dy'; # $name is now 'freddy' my $null = substr $name, 6, 2; # returns "" (no warning) my $oops = substr $name, 7; # returns undef, with warning substr($name, 7) = 'gap'; # raises an exception

      Note that the lvalue returned by the three-argument version of substr() acts as a 'magic bullet'; each time it is assigned to, it remembers which part of the original string is being modified; for example:

      $x = '1234'; for (substr($x,1,2)) { $_ = 'a'; print $x,"\n"; # prints 1a4 $_ = 'xyz'; print $x,"\n"; # prints 1xyz4 $x = '56789'; $_ = 'pq'; print $x,"\n"; # prints 5pq9 }

      Wow, I can copy/paste :)

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[makita]: Need to sign more elements but all types I put in array are ignored. And is always signed only the body
[Discipulus]: no makita sorry. i see in the synopsis of the module: "WARNING: Only limited real-life experience" might be better compose a SOPW with some code example and data
[Discipulus]: ..or inspect the source code of the module
[makita]: I am doing this:
[makita]: my $sig = $wss->signature( schema => $wsdl, token => $token, sign_types=>'wsa: Action','wsa:To', 'wsu:Timestamp', 'wsa:MessageID',' SOAP-ENV:Body', signer=>DSIG_RSA_S HA1, public_key => $cert,
[Corion]: Oof, I haven't done much with signing SOAP requests. markov is usually somebody good to ask via mail ;)
[makita]: I need to create a SOAP call where are signed more types not only the body
[makita]: I am inspecting it second day :)
[makita]: Thanks
[Discipulus]: better to ask a full SOPW

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