Csharp/CSharp Tutorial/Operator/Assignment Operator — различия между версиями

Материал из .Net Framework эксперт
Перейти к: навигация, поиск
м (1 версия)
 
(нет различий)

Версия 15:31, 26 мая 2010

Full list of shortcut assignment operators available in C#.

Shortcut Operator                 Equivalent To
x++, ++x                          x=x+1
x--, --x                          x=x-1
x+=y                              x=x+y
x-=y                              x=x-y
x*=y                              x=x*y
x/=y                              x=x/y
x%=y                              x=x%y
x>>= y                            x=x>>y
x<<= y                            x=x<<y
x&=y                              x=x&y
x|=y                              x=x|y
x^=y                              x=x^y

List of Compound Operators

Operator                        Symbol                     Sample
Addition Assignment             +=                         variable+=5;
Subtraction Assignment          -=                         variable-=10;
Multiplication Assignment       *=                         variable*=5;
Division Assignment             /=                         variable/=5;
Modulus Assignment              %=                         variable%=3;
And Assignment                  &=                         variable&=3;
Or Assignment                   |=                         variable|=3;
XOR Assignment                  ^=                         variable^= 3;
Left-Shift Assignment           <<=                        variable<<=3;
Right-Shift Assignment          >>=                        variable>>=1

Operator list

Category                                          Operator
Arithmetic                                        +-*/%
Logical                                           &|^~&&||!
String concatenation                              +
Increment and decrement                           ++ --
Bit shifting                                      << >>
Comparison                                        == != <> <= >=
Assignment                                        =+=-=*=/=%=&=|=^=<<=>>=
Member access (for objects and structs)           .
Indexing (for arrays and indexers)                []
Cast                                              ()
Conditional (the Ternary Operator)                ?:
Delegate concatenation and removal                +-
Object Creation                                   new
Type information                                  sizeof (unsafe code only) is typeof as
Overflow exception control                        checked unchecked
Indirection and Address                           *->& (unsafe code only) []
Namespace alias qualifier                         ::
Null coalescing operator                          ??

The Assignment Operator

It has this general form:


var = expression;