equality operators that distinguish C<undef>


Syntax::Operator::Equ provides infix operators that implement equality tests of strings or numbers similar to perl's eq and == operators, except that they consider undef to be a distinct value, separate from the empty string or the number zero.

These operators do not warn when either or both operands are undef. They yield true if both operands are undef, false if exactly one operand is, or otherwise behave the same as the regular string or number equality tests if both operands are defined.

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Install libsyntax-operator-equ-perl