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Example code of frank-houweling/weighted-random

Informations about the package weighted-random

Weighted random

Build Status codecov

This library is used to pick random values from a set of registered values, where values with a higher weight have a larger probability to be picked.

Installing

Install this library using composer.

Getting started

Using this library is simple. Initiate the WeightedRandomGenerator, register the possible values, and start generating random values!

Registering values

You can set one value with its weight using the following method. A higher weight means a higher probability that the value is generated by the random generator.

You can register multiple values at once with the registerValues() method. This method only accepts strings an integers as values.

The registerValues() methods expects the value to be the key, and the weight to be the value of the passed array.

You can remove a value from the generator with the removeValue method.

If you prefer, you can also use the WeightedValue valueobject. You should use the registerWeightedValue and removeWeightedValue methods to register and remove values with these value objects.

Retrieving registered values

You can retrieve registered values and their weights from the generator. These are always returns as WeightedValue valueobjects.

Generating a random sample

To generate a random sample from the registered values, we use the generate method.

Generated values are not always unique. It is possible that calling the generate method twice will return in the same value twice.

You can also generate a sample of multiple values using the generateMultiple method, and a set of multiple values without a possibility of duplicates with generateMultipleWithoutDuplicates.

All versions of weighted-random with dependencies

PHP Build Version
Package Version
Requires php Version ^7.3
beberlei/assert Version ^3.2
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