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

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??????? ????? ??????
???? ??????? ???
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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