Several methods of generating random numbers in Erlang "Erlang"

Erlang has three ways to produce a random number

Random:uniform ().

This function is provided by the Erlang Library random module. This is generally used.

1> Random:uniform (). 0.4435846174457203

Erlang:now ().

Use the current time as a random believe a lot of people have done it. So if you don't have a lot of demands, you can do the same.

1> Erlang:now (). { 1419,831449,715000}

Crypto:strong_rand_bytes (N).

The crypto module is a module for encryption. The Strong_rand_bytes function produces a uniform n-byte random number. The binary data is returned. Such as

1> <<A:32,B:32,C:32>> = Crypto:strong_rand_bytes (a). <<154,106,144,218,65,238,246,170,246,70,252,167>>2> A. 2590675162

You can shengcheng,3 a 32-bit random number, which is equivalent to 3 random integers.

Several methods of generating random numbers in Erlang "Erlang"