indexing a string

[zzzqqq]

Hi,
Anyone know is it possible to insert a string value at a specific index in another string?
For example insert "234" into "657878768" at index 5 therefore overwriting it?
Cheers,
Mark.

 

[ishnid]

Use substr:

my $original = '657878768';
my $replacement = '234';

# where in the string you want to insert it
my $index = 5;

# how many characters you want to replace
my $replace = length $replacement;

substr( $original, $index, $replace, $replacement );

 

[zzzqqq]

Cheers,
Excellent! Had a fair idea of that was really wondering was there a direct indexing method of doing it?
Thanks

 

[icrf]

Do you mean using substr() as an lvalue?

substr($original, $index, $replace) =  $replacement;

- Andrew
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