Fuzion Logo
flang.dev — The Fuzion Language Portal
JavaScript seems to be disabled. Functionality is limited.

Idiom # 69: Seed random generator

See programming-idioms.org:

Random numbers generators in Fuzion are effects. To use a random number generator with a particular seed, we have to create an instance of simpleRandomProvider with the given seed and run code with this this effect in its environment. The standard library feature simpleRandom creates such a random provider with the given seed and installs it as the environment for running the code provided with the function parameter f.

Code

Running Example

The following example provides a feature seed that executes a function f with in an environment with a seeded random numer generator. For illustration, showRandom is called in this context and also in the default random provider and an explicitly time seeded random provider: