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How can I access/change the first N letters of a s

Jasmine
Administrator

Jan 19, 2001, 2:49 PM

Post #1 of 1 (1875 views)

How can I access/change the first N letters of a s	Can't Post

(From the Perl FAQ)

How can I access/change the first N letters of a string?

There are many ways. If you just want to grab a copy, use substr():

Code

    $first_byte = substr($a, 0, 1);

If you want to modify part of a string, the simplest way is often to use substr() as an lvalue:

Code

    substr($a, 0, 3) = "Tom";

Although those with a pattern matching kind of thought process will likely prefer:

Code

    $a =~ s/^.../Tom/;

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