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Expressions in Patterns
CXL supports expressions for numeric computations and operations on strings. Any expression can be used as a pattern. If an expression evaluates to true (non-zero or non-null value) on the current input line, the line is matched and the associated action statements are executed.
Typical expression patterns involve comparisons between numbers or strings. A comparison expression uses a comparison operator. Comparison operators are discussed in the Comparison Expressions.
CXL supports string matching through regular expressions. A string matching pattern tests whether a string contains a substring matched by a regular expression.
Last modified date: 08/10/2022