Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl Monk, Perl Meditation
 
PerlMonks  

comment on

( [id://3333]=superdoc: print w/replies, xml ) Need Help??

A historic example of string eval that springs to mind is Larry's famous rename script. See also Unix rename faq (a version of Larry's script is given at the end) and the Perl Cookbook, recipe 9.9.

And though these may set a poor example for newbies, please notice that Acme::Bleach:

do {eval brighten $shirt; exit} unless dirty $shirt && not dress $shir +t;
Acme::Buffy:
do {eval unslay $demon; exit} unless evil $demon && not punch $demon;
and Acme::EyeDrops:
eval eval '"'. ("\["^ '+'). ('['^')') .('`'|')') .('`'|'.'). ('['^'/'). ('{'^'[').''. ('\\'). '"'.('`'|"\(").( '`'|'%') .('`'|',').('`'|',' ).('`'| '/').('{'^'[').("\["^ ',').('`'|'/').('['^')').('`' |',').('`'|'$').'\\'.('\\').( '`'|'.').'\\'.'"'.';'.('!'^'+' ).'"';$:='.'^'~';$~='@'|"\("; $^=')'^'[';$/='`'|'.';$,= (( (( '('))))^'}';$\= '`'| (( '!') );$:=')' ^(( ( '}' ))); $~= '*' |(( '`')) ;( $^ )=( '+') ^+ (( (( ( (( (( (( ( ( ( (( ( ( ( ( '_' ) ) )) )) ) )) )))) ) )) )))) ;#;#
all rely on good ol' string eval to perform their magic. :-)


In reply to Re: Small examples of string eval by eyepopslikeamosquito
in thread Small examples of string eval by spurperl

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • Are you posting in the right place? Check out Where do I post X? to know for sure.
  • Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
    <code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
  • Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
  • Want more info? How to link or How to display code and escape characters are good places to start.
Log In?
Username:
Password:

What's my password?
Create A New User
Domain Nodelet?
Chatterbox?
and the web crawler heard nothing...

How do I use this?Last hourOther CB clients
Other Users?
Others wandering the Monastery: (3)
As of 2024-03-29 05:21 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found