Contributed by tadman
on Apr 23, 2001 at 22:24 UTC
Q&A
> strings
Description: As in:
@bits = chunk($scalar, $bytes);
Which would return $scalar in @bits, each $bytes size, plus
the remainder in the last entry. Answer: How can I split a string into chunks of size n bytes? contributed by Masem @bits = ( $scalar =~ /.{1,$bytes}/gs );
Edited by tye to add "s" on the end otherwise "." won't match newlines.
Edited by chipmunk to change {0,$bytes} to {1,$bytes}; otherwise a null string is matched at the end. | Answer: How can I split a string into chunks of size n bytes? contributed by MeowChow push @bits, substr $scalar, 0, $bytes, '' while length $scalar;
| Answer: How can I split a string into chunks of size n bytes? contributed by davido If by "bytes" you mean ASCII characters from a string, this is a simple and relatively fast solution:
my $string = "1234567890abcdefghijABCDEFGHIJK";
my $n = 2; # $n is group size.
my @groups = unpack "a$n" x (length( $string ) /$n ), $string;
This solution has a couple of nice bonuses. First, it will only return complete groups. If you have extra characters that don't complete out a group, it won't give them to you. Second, it is easily adaptable to any other data type that pack and unpack support.
UPDATE: As Aristotle pointed out here, if you want the last group even if it's incomplete you may do this:
my @groups = unpack "a$n" x ((length($string)/$n)-1) . "a*", $string;
|
Please (register and) log in if you wish to add an answer
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
Read Where should I post X? if you're not absolutely sure you're posting in the right place.
Please read these before you post! —
Posts may use any of the Perl Monks Approved HTML tags:
- a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
|
For: |
|
Use: |
| & | | & |
| < | | < |
| > | | > |
| [ | | [ |
| ] | | ] |
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.
|
|