associativity

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associativity

(programming)
The property of an operator that says whether a sequence of three or more expressions combined by the operator will be evaluated from left to right (left associative) or right to left (right associative). For example, in Perl, the lazy and operator && is left associative so in the expression:

\$i >= 0 && \$x[\$i] >= 0 && \$y[\$x[\$i]] == 0

the left-most && is evaluated first, whereas = is right associative, so in

\$a = \$b = 42

the right-most assignment is performed first.
References in periodicals archive ?
Discuss associative property briefly: So we have 8 + 5 and we can see that as 8 + (2 + 3) and then we can put our 2 over with the 8 so that becomes (8 + 2) + 3.
Associative property is well satisfied in Dempster's rule of combination.
It has to be pointed out that the associative property is not satisfied in the previous D numbers combination rule; that is to say that the sequence of multiple D numbers has great effects on the final results when they get combined.
The associative property is not satisfied in the rule of combining multiple D numbers.
As such, the associative property plays an important though implicit role in students' ability to change a given problem to an equivalent problem, hence, their ability to use a range of efficient mental and written strategies.

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