Dart : Operators

참조: Dart language tour

 

Prefix and postfix increment and decrement operator

++

--

 

a++; ++a; a--; --a;

Arithmetic operator

+

-

*

/

~/

&

 

a + b; a - b; a * b; a / b; a ~/ b; a % b;

Assignment operator

=	??=
-=	+=	*=	/=	~/=	%=
<<=	>>=	&=	^=	|=

a = b; a ??= b;
a -= b; a += b; a *= b; a /= b; a ~/= b; a %= b;
a <<= b; a >>= b; a &= b; a ^= b; a |= b;

Bitwise, shift operator

&

~

|

^

<<

>>

(a & b); (a & ~b); (a | b); (a ^ b); (a << 4); (a >> 4);

Equality and relational operator

==	!=
>	<	>=	<=

a == b; a != b; a > b; a < b; a >= b; a <= b;

Conditional expression

condition ?  expr1 : expr2

expr1 ?? expr2

 

c ? a : b; (a ?? b);

Type test and type cast operator

as

is

is!

 

if (a is T) a.b = 1; if (a is! T) = a.b = 1; (a as T).b = 1;

Logical operator

!

||

&&

 

!a; a || b; a && b;

Member access operator

.

?.

T a; a.b; a?.b;

Cascade notation

..

var a = classA();
a.b = 1
a.add(2);

classA()
  ..b = 1
  ..add(1)