Index
Symbols
- ! (exclamation point)
- logical not operator, Guestbook Preliminaries
- != (numeric inequality) operator, if Statements
- #! (shebang line), Creating the “Hello, world!” Script
- $ (dollar sign)
- end-of-string anchor in regular expressions, Regular Expressions, The Search Pattern
- scalar variables, Scalar Variables
- $_ (default variable), Using the Default Variable $_, Using the Default Variable $_
- disabling HTML tags, Guestbook Preliminaries
- finding HTML files, Finding HTML Files Only
- operator and, Converting IP Addresses
- processing search results, Running SWISH-E via a CGI Script
- % (percent sign)
- hash variables and, Hash Variables
- indicates formatting codes, The &new_visit and &add_to_visit Subroutines
- modulus operator, The &new_visit and &add_to_visit Subroutines
- () (parentheses)
- grouping logical elements, if Statements
- grouping metacharacter in regular expressions, The Search Pattern
- using capturing parentheses, Thinking Like a Computer, Alternation, The Mammoth Regular Expression, Taint Mode, Running SWISH-E via a CGI Script, Using Templates
- (diamond operator)
- in clf_lookup.plx script, Converting IP Addresses
- in log_report.plx script, The Log-Analysis Script
- (spaceship operator)
- numeric comparison, Fancier Sorting
- (|) (pipe character)
- alternation metacharacter in regular expressions, The Search Pattern, Alternation, Alternation
- backslashed in regular expressions, Generating the Alphabetical Index
- * (asterisk)
- quantifier metacharacter in regular expressions, The Search Pattern, Bumping Along and Backtracking ...
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