# List of operators for Delphi

Source: Internet
Author: User

category operator Operation Number of operands result Type Example
Arithmetic operators + Add integers, real numbers integers, real numbers X + Y
- Reducing integers, real numbers integers, real numbers Result-1
* By integers, real numbers integers, real numbers P * InterestRate
/ Real number In addition integers, real numbers Real X/2
Div Integer except Integer Integer Total Div unitsize
MoD Take the mold Integer Integer Y MoD 6
+ (one yuan) Symbolic equivalents integers, real numbers integers, real numbers +7
-(one Yuan) Symbol opposite integers, real numbers integers, real numbers -X
Boolean operator Not Negative Boolean type Boolean Not (C in MySet)
and And Boolean type Boolean Done and (Total > 0)
Or Or Boolean type Boolean A or B
Xor XOR or Boolean type Boolean A XOR B
Logical (bitwise) operator Not Bitwise negation Integer Integer Not X
and Bitwise-AND Integer Integer X and Y
Or Bitwise OR Integer Integer X or Y
Xor Bitwise XOR OR Integer Integer X XOR Y
Shl Bitwise LEFT Shift Integer Integer X SHL 2
Shr Bitwise RIGHT SHIFT Integer Integer Y SHR I
String operators + Connection string, compressed string, character String S + '. '
Pointer operators + Pointer Plus Character pointer, integer Character pointer P + I
- Pointer minus Character pointer, integer Character pointer, integer P-q
^ Pointer dismiss reference Pointer Base type of pointer p^
= Equal Pointer Boolean P = Q
<> Range Pointer Boolean P <> Q
Set operators + and set Collection Collection Set1 + Set2
- Subtraction Collection Collection S–t
* Intersection Collection Collection S * T
<= Subset Collection Boolean Q <= MySet
>= Hyper-Set Collection Boolean S1 >= S2
= Equal Collection Boolean S2 = MySet
<> Range Collection Boolean MySet <> S1
Inch Members Ordinal, set Boolean A in Set1
Relational operators = Equal Simple types, classes, class references, interfaces, strings, compressed strings Boolean I = Max
<> Range Simple types, classes, class references, interfaces, strings, compressed strings Boolean X <> Y
< Less than Simple type, string, compressed string, PChar Boolean X < Y
> Greater than Simple type, string, compressed string, PChar Boolean Len > 0
<= Less than or equal to Simple type, string, compressed string, PChar Boolean Cnt <= 1
>= Greater than or equal to Simple type, string, compressed string, PChar Boolean I >= 1
Class operator As Transformation Instances of classes and classes
Is Judge
= Relational operators = and <> are also used for classes
<>
Address (@) operator @X If x is a variable, then @x returns the address of X.  When the compilation indicator {\$T-} is valid, @x is the pointer type; When the compiler indicates {\$T +} state, @x is the ^t type, where T is the type of x.
@F If f is a routine (function or procedure), then @f returns the entry point of F, and the type of @f is always pointer.
Methods in the @ class When @ is applied to a method defined in a class, the method identifier must be qualified by the name of the class. For example: @TMyClass. dosomething

List of operators for Delphi

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