Editing compound assignment operator

The *compound assignment operators* (also called *combination assignment operators*) provide a more concise way of creating [[expression]]s by enabling calculations involving a [[variable]] to be performed without the [[variable]] being included in the right hand [[operand]]. {{{ $value += 3; # $value = $value + 3 $value /= 3; # $value = $value / 3 }}} === Arithmetic === | += | [[addition]] | !-= | [[subtraction]] | !*= | [[multiplication]] | !/= | [[division]] | %= | [[modulus]] === Operator precedence === Care should be taken when compound assignment operators are used within an [[expression]]. Without [[parentheses]], the compound assignment operators may have a lower [[precedence]] than the other operators around them, causing unexpected results to occur: {{{ a = b + c += 2 ; # Syntax error: you cannot assign to 'b + c'. This is equivalent to a = (b + c) += 2 a = b + (c += 2) ; # Ok, fixed. This expression increments c by 2 then adds it to b }}} === There are no logical compound assignment operators in awk === The awk extraction and reporting language does not provide support for logical compound assignment operators: {{{ # This will not work because there are # no logical compound assignment operators in awk myflag ||= yourflag myflag &&= bobsflag }}}

Summary:

This change is a minor edit.

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