Provides weighted randomization lottery by given ratios.

ActiveRecord extension for weighted randomization which supplies loading records with weight for randomize into database and weighted randomization of them

Weighted Sampler helps you to pick a random samples from a collection with defined probabilities or weights. You can pass an Array or a Hash with desired probabilities and use Module or Class API to pick samples. Please, see documentation in the repo https://gitlab.com/oleksiy/w...

Calculate Weighted Scores

Gem for selecting items by weight

An extension to the Fisher-Yates-Shuffle algorithm to support weights. It includes a ruby core extension for arrays.

Recording weight and fat, and display chart

Gem to wrap Weimark API

Checksum validation for New Zealand IRD numbers. See http://www.ird.govt.nz/how-to/irdnumbers/ for details of what an IRD is.

Simple base interactor class

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weixin api authorize access_token

A simple tool to decrypt and encrypt Weixin messages.

The idea behind this gem is to abstract out the logic of sending out welcome emails during a free trial.