天津11选5走势图开奖: JSON在線解析

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Java 運算符優先級
運算符優先級
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++運算符優先級
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語言運算符優先級
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運算符優先級
結合方向運算符附加信息
非結合clone newclone 和 new
[array()
非結合++ -- 遞增/遞減運算符
非結合~ - (int) (float) (string) (array) (object) (bool) @ 類型
非結合instanceof 類型
右結合! 邏輯操作符
* / % 算術運算符
+ - . 算術運算符 和 字符串運算符
<< >> 位運算符
非結合< <= > >= <> 比較運算符
非結合== != === !== 比較運算符
& 位運算符 和 引用
^ 位運算符
| 位運算符
&& 邏輯運算符
|| 邏輯運算符
? : 三元運算符
= += -= *= /= .= %= &= |= ^= <<= >>= 賦值運算符
and 邏輯運算符
xor 邏輯運算符
or 邏輯運算符
,多處用到

這個表給出Python的運算符優先級(從低到高).

從最低的優先級(最松散地結合)到最高的優先級(最緊密地結合)。

這意味著在一個表達式中,Python會首先計算表中較下面的運算符,然后在計算列在表上部的運算符。

Python 運算符優先級
運算符描述
lambdaLambda表達式
or布爾“或”
and布爾“與”
not x布爾“非”
in,not in成員測試
is,is not同一性測試
<,<=,>,>=,!=,==比較
|按位或
^按位異或
&按位與
<<,>>移位
+,-加法與減法
*,/,%乘法、除法與取余
+x,-x正負號
~x按位翻轉
**指數
x.attribute屬性參考
x[index]下標
x[index:index]尋址段
f(arguments...)函數調用
(experession,...)綁定或元組顯示
[expression,...]列表顯示
{key:datum,...}字典顯示
'expression,...'字符串轉換

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