Beefy Boxes and Bandwidth Generously Provided by pair Networks
No such thing as a small change
 
PerlMonks  

Answer: What's the difference between chr() and pack('C', hex($1))?

( #37395=categorized answer: print w/ replies, xml ) Need Help??

Q&A > strings > What's the difference between chr() and pack('C',hex($1))? - Answer contributed by Fastolfe

There is a subtle difference that may bite you. chr works on characters while pack "C" works on bytes. With a standard ASCII character set, these are indistinguishable under most circumstances, but if you're using unicode (see perlunicode) data in later versions of Perl, chr and ord behave differently than their pack/unpack counterparts. pack/unpack will still work with individual bytes while chr/ord will actually deal with the full unicode character, which may be longer than 1 byte.

  • Comment on Answer: What's the difference between chr() and pack('C', hex($1))?
Log In?
Username:
Password:

What's my password?
Create A New User
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others about the Monastery: (5)
As of 2016-07-29 21:29 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    What is your favorite alternate name for a (specific) keyboard key?


















    Results (264 votes). Check out past polls.