快速索引:

Java 运算符优先级
运算符优先级
postfixexpr++expr--
unary++expr --expr +expr -expr ~ !
multiplicative* / %
additive+ -
shift<< >> >>>
relational< > <= >= instanceof
equality== !=
bitwise AND&
bitwise exclusive OR^
bitwise inclusive OR|
logical AND&&
logical OR||
ternary? :
assignment= += -= *= /= %= &= ^= |= <<= >>= >>>=
C++运算符优先级
Precedence Operator Description Associativity
1:: Scope resolution Left-to-right
2++  -- Suffix/postfix increment and decrement
() Function call
[] Array subscripting
. Element selection by reference
−> Element selection through pointer
3++  -- Prefix increment and decrement Right-to-left
+   Unary plus and minus
!  ~ Logical NOT and bitwise NOT
(type) Type cast
* Indirection (dereference)
& Address-of
sizeof Size-of
new,new[] Dynamic memory allocation
delete,delete[] Dynamic memory deallocation
4.*  ->* Pointer to member Left-to-right
5*  /  % Multiplication, division, and remainder
6+   Addition and subtraction
7<<  >> Bitwise left shift and right shift
8<  <= For relational operators < and ≤ respectively
>  >= For relational operators > and ≥ respectively
9==  != For relational = and ≠ respectively
10& Bitwise AND
11^ Bitwise XOR (exclusive or)
12| Bitwise OR (inclusive or)
13&& Logical AND
14|| Logical OR
15?: Ternary conditional Right-to-Left
16= Direct assignment (provided by default for C++ classes)
+=  −= Assignment by sum and difference
*=  /=  %= Assignment by product, quotient, and remainder
<<=  >>= Assignment by bitwise left shift and right shift
&=  ^=  |= Assignment by bitwise AND, XOR, and OR
17throw Throw operator (for exceptions)
18, Comma Left-to-right
C语言运算符优先级
Precedence Operator Description Associativity
1++-- Suffix/postfix increment and decrement Left-to-right
() Function call
[] Array subscripting
. Structure and union member access
−> Structure and union member access through pointer
(type){list} Compound literal(C99)
2++-- Prefix increment and decrement Right-to-left
+ Unary plus and minus
!~ Logical NOT and bitwise NOT
(type) Type cast
* Indirection (dereference)
& Address-of
sizeof Size-of
_Alignof Alignment requirement(C11)
3*/% Multiplication, division, and remainder Left-to-right
4+ Addition and subtraction
5<<>> Bitwise left shift and right shift
6<<= For relational operators < and ≤ respectively
>>= For relational operators > and ≥ respectively
7==!= For relational = and ≠ respectively
8& Bitwise AND
9^ Bitwise XOR (exclusive or)
10| Bitwise OR (inclusive or)
11&& Logical AND
12|| Logical OR
13?: Ternary conditional Right-to-Left
14= Simple assignment
+=−= Assignment by sum and difference
*=/=%= Assignment by product, quotient, and remainder
<<=>>= Assignment by bitwise left shift and right shift
&=^=|= Assignment by bitwise AND, XOR, and OR
15, Comma Left-to-right
PHP运算符优先级
结合方向运算符附加信息
非结合clone newclone 和 new
[array()
非结合++ -- 递增/递减运算符
非结合~ - (int) (float) (string) (array) (object) (bool) @ 类型
非结合instanceof 类型
右结合! 逻辑操作符
* / % 算术运算符
+ - . 算术运算符 和 字符串运算符
<< >> 位运算符
非结合< <= > >= <> 比较运算符
非结合== != === !== 比较运算符
& 位运算符 和 引用
^ 位运算符
| 位运算符
&& 逻辑运算符
|| 逻辑运算符
? : 三元运算符
= += -= *= /= .= %= &= |= ^= <<= >>= 赋值运算符
and 逻辑运算符
xor 逻辑运算符
or 逻辑运算符
,多处用到

这个表给出Python的运算符优先级(从低到高).

从最低的优先级(最松散地结合)到最高的优先级(最紧密地结合)。

这意味着在一个表达式中,Python会首先计算表中较下面的运算符,然后在计算列在表上部的运算符。

Python 运算符优先级
运算符描述
lambdaLambda表达式
or布尔“或”
and布尔“与”
not x布尔“非”
in,not in成员测试
is,is not同一性测试
<,<=,>,>=,!=,==比较
|按位或
^按位异或
&按位与
<<,>>移位
+,-加法与减法
*,/,%乘法、除法与取余
+x,-x正负号
~x按位翻转
**指数
x.attribute属性参考
x[index]下标
x[index:index]寻址段
f(arguments...)函数调用
(experession,...)绑定或元组显示
[expression,...]列表显示
{key:datum,...}字典显示
'expression,...'字符串转换

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