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???? ?????? ???????? ?? Java / C++ / C / PHP / Python

Java C++ ??? C PHP Python
??????? ????? Java
???? ??????? ??????
postfix expr ++ 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
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
17 throw Throw operator (for exceptions)
18 , Comma Left-to-right
??????? ????? ??? C
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
????? ??? ????????? ???? ??????? ??????? ??????
??? ????? clone new ??????? ?????
???? [ array()
??? ????? ++ -- ???? ??????? / ???????
??? ????? ~ - (int) (float) (string) (array) (object) (bool) @ ???
??? ????? instanceof ???
???? ???????? ! ????? ???????? ????????
???? * / % ????? ???????? ????????
???? + - . ????? ???????? ???????? ?????? ???????? ??? ??????? ??????
???? << >> ????? ???????? ????????
??? ????? < <= > >= <> ?????? ????????
??? ????? == != === !== ?????? ????????
???? & ????? ???? ????????
???? ^ ????? ???????? ????????
???? | ????? ???????? ????????
???? && ????? ???????? ????????
???? || ????? ???????? ????????
???? ? : ???? ??????? ???????
???? = += -= *= /= .= %= &= |= ^= <<= >>= ???? ???????
???? and ????? ???????? ????????
???? xor ????? ???????? ????????
???? or ????? ???????? ????????
???? , ?????? ?? ??? ?????

???? ??? ?????? ??????? ????? Python (?? ?????? ??? ??????).

?? ???????? ?????? (????? ???????) ??? ???????? ?????? (?????? ???????).

??? ???? ??? ?? ?????? ????? Python ????? ?????? ??????? ???????? ?? ????? ?????? ?? ??????? ?? ????? ??? ????? ??????? ???????? ?? ????? ?????? ?? ??????.

??????? ????? ??????
???? ??????? ???
lambda ????? ?????
or ??????? "??"
and ????????? "?"
not x ???????? "???"
in，not in ?????? ???????
is，is not ?????? ??????
<，<=，>，>=，!=，== ??????
| ????? "??" ??
^ ????? XOR ??
& ????? "?" ??
<<，>> ????
+，- ????? ??????
*，/，% ????? ??????? ????? ??????
+x，-x ????? ????? ??????
~x ??? ????
** ????
x.attribute ???? ??????
x[index] ?????? ??????
x[index:index] ??? ???????
f(arguments...) ??????? ??????
(experession,...) ??? ?? ??? ???????
[expression,...] ??? ???????
{key:datum,...} ???? ???????
'expression,...' ????? ???????

??? ??????? ??????:

??? ????? ?????? QQ
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