Delphi Prism Operators
An operation with only one operand (a single input). Common unary operators include + plus, - minus, and bitwise not. Some operators can function as both unary and binary operators. For example, + and - operators can serve as either.
Languages Focus What unary operators are supported in additoin to the standard plus, minus, and bitwise not.
Delphi Prism:
The obvious Prism unary operators are + , - , and Not .
+
Plus
-
Minus
Not
Bitwise Not
Inc()
Increment
Dec()
Decrement
Syntax Example: var i: Integer := 1; Inc(i); MessageBox.Show("" + i); //Displays 2
Cross Reference Examples:
Access VBA:
An operation with only one operand (a single input) such as + , - , and Not .
ASP Classic:
An operation with only one operand (a single input) such as + , - , and Not .
C#:
An operation with only one operand (a single input). The following are the C# unary operators: +
, -
, !
, ~
, ++
, --
, true
, or false.
C++:
An operation with only one operand (a single input) such as ++X and --Y .
More Info / Comment
Corel Paradox:
The ObjectPAL unary operators are:
More Info / Comment
Delphi:
An operation with only one operand (a single input). In Object Pascal, a unary operator has the highest precedence and always precedes its operand (for example, -B), except for the ^ pointer operator, which follows its operand (for example, P^ ). In addition to the obvious + , - , and Not operators, Delphi also offers:
^
Pointer
@
returns the address of a variable, function, procedure, or method; a pointer to its operand.
inc()
Increment
dec()
Decrement
The TYPE operator is also a unary operator and is valuated at compile time. The TYPE operator returns the size in bytes of the operand,
More Info / Comment
Java:
An operation with only one operand (a single input). The Java unary operators are ++, --, +, -, ~, and !.
+ Indicates positive value (numbers are positive without this)
- Negates an expression
++ Increment operator by 1
-- Decrement operator by 1
! Logical complement operator (inverts the value of a boolean)
~ B itwise inversion operator (works on integral data types)
More Info / Comment
JavaScript:
An operation with only one operand (a single input). JavaScript unary operators include ++ and --. They can be used either before or after a variable as in: a++, b--, and ++a, and --b.
Examples:
iCounter++; iCounter--; ++iCounter; --iCounter;
Syntax Example: var iCounter=0; for (iCounter=0;iCounter<=5;iCounter++ ) { document.write("Count is " + iCounter + "<br>"); }
Perl:
An operation with only one operand (a single input). The following are the Perl unary operators: !, -, ~, +, \, &, and *.
! performs logical negation which is "not"
- performs arithmetic negation if the operand is numeric.
~ performs bitwise negation, that is 1's complement.
+ has no semantic effect whatsoever, even on strings.
\ creates a reference to whatsoever follows.
& Address of operator.
* Dereference address operator.
PHP:
A unary operator operates on only one value.
PHP Examples:
! negation operator
++ increment operator
-- decrement operator
VB Classic:
An operation with only one operand (a single input) such as + , - , and Not .
VB.Net:
An operation with only one operand (a single input). A unary operator method can return any type but takes only one parameter, which must be the type of the containing class. In addition to the obvious + , - , and Not operators, VB.Net also offers: