Info Catalog gawk: Values gawk: Using Constant Regexps

gawk: Constants

 
 6.1.1 Constant Expressions
 --------------------------
 
 The simplest type of expression is the "constant", which always has the
 same value.  There are three types of constants: numeric, string, and
 regular expression.
 
    Each is used in the appropriate context when you need a data value
 that isn't going to change.  Numeric constants can have different forms,
 but are internally stored in an identical manner.
 

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· Scalar Constants            Numeric and string constants.
· Nondecimal-numbers          What are octal and hex numbers.
· Regexp Constants            Regular Expression constants.
 

Info Catalog gawk: Values gawk: Using Constant Regexps