Erlang -- operator

(1) Erlang OPERATOR:

1. Arithmetic Operators: +,-, *,/, Div, REM,

1. "/", used for division, but the result is always a floating point, that is, whether or not the Division

2. Div, division, and integer part of the result

3. REM, modulo

2. Comparison operators:>, <, >=, = <, ==, =: =,/=, =/=

1. = <, less than or equal

2, =, compare whether two values are equal, eg: 1 = 1.0. The result is: True.

3, =: =, compare whether two values are equal, and the types of the two objects must be equal, eg: 1 =: = 1.0. The result is: false.

4,/=, not equal, eg: 1/= 1.0. The result is: false.

5, =/=, incomplete, etc., eg: 1 =/= 1.0, the result is: True

3. bitwise operators: band, Bor, bnot, bxor, BSL, BSR

1. Band, bit and

2. Bor, bit or

3. bnot, non-bits

4. bxor, by bit or

5. BSL: shifts left by bit. For example: 1 BSL 5. %, 1 is shifted to 5 places. The result is 32.

6. BSR, right shift by bit

4. logical operators: (expressions on both sides of the operators are calculated)

1. Not, non-logical

2. And, logic and

3. Or, logical or

4. XOR, logic exclusive or

5. Short-circuit logic operator: (if the first part can produce the result, no other expression will be calculated)

1. andalso, X andalso Y. If X is true, Y is executed. If X is false, Y is not calculated. False is used directly.

2. orelse, X orelse Y. If X is true, the result is true, and Y is not calculated.

6. Operator priority:

Operator	Associativity
: # (One dollar) +, (one dollar)-, bnot, not /, *, Div, REM, band, and +,-, Bor, bxor, BSL, BSR, Or, XOR ++ ,-- =,/=, = <, <,> =, =: =, =/= Andalso Orelse =	Left to right Right to left, that is, the list operation, is to add the left to the right Right to left

Erlang -- operator