F＃-演算子

演算子は、特定の数学的または論理的な操作を実行するようコンパイラーに指示する記号です。 F＃は組み込み演算子が豊富であり、次の種類の演算子を提供します-

算術演算子

次の表は、F＃言語でサポートされているすべての算術演算子を示しています。変数Aが10を保持し、変数Bが20を保持すると仮定します-

リンク：/fsharp/fsharp_arithmetic_operators [例を表示]

Operator	Description	Example
+	Adds two operands	A + B will give 30
-	Subtracts second operand from the first	A - B will give -10
*	Multiplies both operands	A* B will give 200
/	Divides numerator by de-numerator	B/A will give 2
%	Modulus Operator and remainder of after an integer division	B % A will give 0
**	Exponentiation Operator, raises an operand to the power of another	B**A will give 20¹⁰

次の表は、F＃言語でサポートされているすべての比較演算子を示しています。これらのバイナリ比較演算子は、整数型および浮動小数点型で使用できます。これらの演算子は、bool型の値を返します。

変数Aが10を保持し、変数Bが20を保持すると仮定します-

リンク：/fsharp/fsharp_comparison_operators [例を表示]

Operator	Description	Example
=	Checks if the values of two operands are equal or not, if yes then condition becomes true.	(A == B) is not true.
<>	Checks if the values of two operands are equal or not, if values are not equal then condition becomes true.	(A <> B) is true.
>	Checks if the value of left operand is greater than the value of right operand, if yes then condition becomes true.	(A > B) is not true.
<	Checks if the value of left operand is less than the value of right operand, if yes then condition becomes true.	(A < B) is true.
>=	Checks if the value of left operand is greater than or equal to the value of right operand, if yes then condition becomes true.	(A >= B) is not true.
⇐	Checks if the value of left operand is less than or equal to the value of right operand, if yes then condition becomes true.	(A ⇐ B) is true.

次の表は、F＃言語でサポートされているすべてのブール演算子を示しています。変数Aが true を保持し、変数Bが false を保持すると仮定します-

リンク：/fsharp/fsharp_boolean_operators [例を表示]

Operator	Description	Example
&&	Called Boolean AND operator. If both the operands are non-zero, then condition becomes true.	(A && B) is false.

Called Boolean OR Operator. If any of the two operands is non-zero, then condition becomes true.	(A
B) is true.	not	Called Boolean NOT Operator. Use to reverses the logical state of its operand. If a condition is true then Logical NOT operator will make false.

ビットごとの演算子はビットに対して機能し、ビットごとの操作を実行します。 &&&（ビットごとのAND）、|||の真理値表（ビットごとのOR）、および^{^}（ビットごとの排他的OR）は次のとおりです-

リンク：/fsharp/fsharp_bitwise_operators [例を表示]

A = 60であると仮定します。およびB = 13;今バイナリ形式では、次のようになります-

A = 0011 1100

B = 0000 1101

A &&& B = 0000 1100

A ||| B = 0011 1101

A ^{^} B = 0011 0001

_~ A = 1100 0011

F＃言語でサポートされているビット演算子は、次の表にリストされています。変数Aが60を保持し、変数Bが13を保持すると仮定します-

Operator	Description	Example
&&&	Binary AND Operator copies a bit to the result if it exists in both operands.	(A &&& B) will give 12, which is 0000 1100

	Binary OR Operator copies a bit if it exists in either operand.	(A
		B) will give 61, which is 0011 1101
^{^}	Binary XOR Operator copies the bit if it is set in one operand but not both.	(A ^{^} B) will give 49, which is 0011 0001
_~	Binary Ones Complement Operator is unary and has the effect of 'flipping' bits.	(_~A) will give -61, which is 1100 0011 in 2’s complement form.
<<<	Binary Left Shift Operator. The left operands value is moved left by the number of bits specified by the right operand.	A <<< 2 will give 240 which is 1111 0000
>>>	Binary Right Shift Operator. The left operands value is moved right by the number of bits specified by the right operand.	A >>> 2 will give 15 which is 0000 1111

次の表に、F＃言語の演算子およびその他の式キーワードの優先順位を、優先順位の低いものから高いものへと示します。

リンク：/fsharp/fsharp_operators_precedence [例を表示]

Operator	Associativity
as	Right
when	Right
	(pipe)
Left	;
Right	let
Non associative	function, fun, match, try
Non associative	if
Non associative	→
Right	:=
Right	,
Non associative	or,

Left	&, &&
Left	< op, >op, =,
op, &op	Left
&&& ,
	, ^{^}, _~, <<<, >>>
Left	^ op
Right	::
Right	:?>, :?
Non associative	- op, +op, (binary)
Left	* op,/op, %op
Left	** op
Right	f x (function application)
Left
(pattern match)	Right
prefix operators (PLUSop, -op, %, %%, &, &&, !op, ~op)	Left
.	Left
f(x)	Left
f<types>	Left