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gawk: Truth Values and Conditions

 
 6.3 Truth Values and Conditions
 ===============================
 
 In certain contexts, expression values also serve as "truth values";
 i.e., they determine what should happen next as the program runs.  This
 minor node describes how 'awk' defines "true" and "false" and how values
 are compared.
 

Menu

 
· Truth Values                What is "true" and what is "false".
· Typing and Comparison       How variables acquire types and how this
                                 affects comparison of numbers and strings with
                                 '<', etc.
· Boolean Ops                 Combining comparison expressions using boolean
                                 operators '||' ("or"), '&&'
                                 ("and") and '!' ("not").
· Conditional Exp             Conditional expressions select between two
                                 subexpressions under control of a third
                                 subexpression.
 

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