Menu
In perl text substitutions are very simple and powerful. I want to do a script with variable substitutions, like:
if ( $IgnoreCase ) {$opt = "gi"} else {$opt = "g"}
$string =~ s/$source/$replace/$opt;
Results in:
Scalar found where operator expected ...
Is there a posibility to do the option variable?
439
print $url if $url =~ s/$search/$replace/ee; This will give us: Port and host name lower case.
$@ The Perl syntax error or routine error message from the last eval, do-FILE, or require command. If set, either the compilation failed, or the die function was executed within the code of the eval.
The most commonly used special variable is $_, which contains the default input and pattern-searching string. For example, in the following lines − #!/usr/bin/perl foreach ('hickory','dickory','doc') { print $_; print "\n"; }
Perl: Use s/ (replace) and return new string [duplicate]
Since you're using /g in all cases you can,
my $opt = $IgnoreCase ? "(?i)" : "";
$string =~ s/$opt$source/$replace/g;
More on this subject in perldoc perlre
One or more embedded pattern-match modifiers, to be turned on (or turned off if preceded by "-" ) for the remainder of the pattern or the remainder of the enclosing pattern group (if any).
This is particularly useful for dynamically-generated patterns, such as those read in from a configuration file, taken from an argument, or specified in a table somewhere. Consider the case where some patterns want to be case-sensitive and some do not: The case-insensitive ones merely need to include (?i) at the front of the pattern.
106
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
