Perl Programming Documentation
Download Perl
Explore

Manual

- Overview
- Tutorials
- FAQs
- History / Changes
- License

Reference

- Language
- Functions
- Operators
- Special Variables
- Pragmas
- Utilities
- Internals
- Platform Specific

Modules

- A • B • C • D • E
- F • G • H • I • L
- M • N • O • P • S
- T • U • X

Tools

- Preferences

# hex

Perl 5 version 18.2 documentation
Go to top
Show recent pages
Recently read

# hex

Perl functions A-Z | Perl functions by category | The 'perlfunc' manpage

- hex EXPR

- hex

  Interprets EXPR as a hex string and returns the corresponding value. (To convert strings that might start with either `0` , `0x` , or `0b`, see oct.) If EXPR is omitted, uses `$_` .

          print hex '0xAf'; # prints '175'    print hex 'aF';   # same

  Hex strings may only represent integers. Strings that would cause integer overflow trigger a warning. Leading whitespace is not stripped, unlike oct(). To present something as hex, look into printf, sprintf, and unpack.