Difference between revisions of "Perl"
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Line 16: | Line 16: | ||
;$string = s/<regexp>/<newvalue>/[g] | ;$string = s/<regexp>/<newvalue>/[g] | ||
:Substitute <regexp> with <newvalue> in $string. The g modifier makes the all occurrences of <regexp> are substituted. | :Substitute <regexp> with <newvalue> in $string. The g modifier makes the all occurrences of <regexp> are substituted. | ||
+ | |||
+ | ;$newstring = substr($string,start,length) | ||
+ | :Return substring of $string |
Revision as of 10:54, 15 February 2018
I'm leaving Perl, traded it for Python. Some shortcuts I'd like to remember
Print out the contents of $variable in a structured format.
use Data::Dumper;
print Dumper($variable);
- $var += <value>
- Add <value> to $var (works for -, *, / too)
- $string .= $addstring
- Concatenate $string and $addstring
- $string = s/<regexp>/<newvalue>/[g]
- Substitute <regexp> with <newvalue> in $string. The g modifier makes the all occurrences of <regexp> are substituted.
- $newstring = substr($string,start,length)
- Return substring of $string