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How is a logical array evaluated as an if condition?

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Guido Gervasio
Guido Gervasio on 17 Mar 2017
Answered: Steven Lord on 17 Mar 2017
For example:
if logical([0, 0, 1)])
% code

Accepted Answer

Steven Lord
Steven Lord on 17 Mar 2017
" if expression, statements, end evaluates an expression, and executes a group of statements when the expression is true. An expression is true when its result is nonempty and contains only nonzero elements (logical or real numeric). Otherwise, the expression is false."
Your vector logical([0 0 1]) is nonempty, but it does not contain only nonzero elements. So the expression is false and the body of your if statement is not executed.

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