Following are the relational operators available in Erlang.
| Operator | Description | Example |
|---|---|---|
| == | Tests the equality between two objects | 2 = 2 will give true |
| /= | Tests the difference between two objects | 3 /= 2 will give true |
| < | Checks to see if the left object is less than the right operand. | 2 < 3 will give true |
| =< | Checks to see if the left object is less than or equal to the right operand. | 2 =<3 will give true |
| > | Checks to see if the left object is greater than the right operand. | 3 > 2 will give true |
| >= | Checks to see if the left object is greater than or equal to the right operand. | 3 >= 2 will give true |
The following code snippet shows how the various operators can be used.
Example
-module(helloworld).
-export([start/0]).
start() ->
io:fwrite("~w~n",[3==2]),
io:fwrite("~w~n",[3/=2]),
io:fwrite("~w~n",[3<2]),
io:fwrite("~w~n",[3=<2]),
io:fwrite("~w~n",[3>2]),
io:fwrite("~w~n",[3>=2]).
The output of the above program will be −
Output
false true false false true true
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