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Logical Operators (Cross Ref > Language Basics)

By Mike Prestwood

C++/CLI versus Delphi Prism: A side by side comparison between C++/CLI and Delphi Prism.

Operators

A language symbol used for assignment, comparison, computational, or as a logical.

Logical Operators

[Other Languages]

Languages Focus

Logical operators perform conditional and, or, and not operations. Some languages support both binary logical operators that link two and unary logical operators negate (make opposite) the truth value of its argument. Finally, some languages short circuit logic. For example, with this or that, if this is an expression returning true, then that is never executed.

C++/CLI:

Same as C++ and Java. C# logical operators:

&	and, as in this and that	No Short Circuit
&&	and, as in this and that	short circuits
\|	or, as in this or that	No Short Circuit
\|\|	or, as in this or that	short circuits
!	Not, as in Not This
^	either or, as in this or that but not both

Syntax Example:

//Given expressions a, b, c, and d:

if !((a && b) && (c || d)) {

  //Do something.

Delphi Prism:

Prism logical operators:

and	and, as in this and that
or	or, as in this or that
not	Not, as in Not This
xor	either or, as in this or that but not both

Syntax Example: 1 certification question.

//Given expressions a, b, c, and d:

if Not (a and b) and (c or d) then

  //Do something.