fakir

Fakir

Fakir generates pseudo-random data.

Fakir::Random, a random number generator, can be defined to never return the same random number, or to not return the same random number within N invocations. Thus one will not get the (random, but appearing to not be) sequence of [ 1, 8, 3, 3, 3, 5, 2, 2 ], with repeating values (3 and 2).

Similarly, Fakir::Array wraps a Ruby Array, extending it with a rand method, which will not return the same element during any sequences of calling rand (until rand_reset is called). Thus with the array [ "apple", "banana", "cherry" ] one will not get the sequence [ "apple", "apple", "banana" ]. This functionality supports seeding data uniquely, such that two elements will not have the same content.

Fakir::EmailAddress generates valid email addresses of several formats, using, by default, the domain "example.com" (thus not actually using a possibly-taken email address). The domain can be specified to a different value.

Installation

Add this line to your application's Gemfile:

gem 'fakir'

And then execute:

$ bundle

Or install it yourself as:

$ gem install fakir

Usage

Random numbers

rnd = Fakir::Random.new 4, 2
nums = 20.times.collect { rnd.rand }
=> [0, 2, 3, 1, 2, 1, 3, 0, 2, 3, 1, 2, 0, 3, 0, 1, 0, 3, 1, 3]

Note that there are no sequences of length 2 with repeated values.

rnd = Fakir::Random.new 4, 3
nums = 20.times.collect { rnd.rand }
=> [1, 0, 2, 1, 0, 2, 3, 0, 2, 3, 0, 2, 3, 0, 2, 1, 3, 2, 1, 0]

No sequences of length 3 have repeated values.

Arrays

ary = %w{ this is a test }
fary = Fakir::Array.new ary
4.times { |n| puts fary.rand }

Each of the elements in the original array will be returned, with none repeating.

ary = %w{ this is a test }
fary = Fakir::Array.new ary
4.times { |n| puts fary.rand }
fary.rand_reset
4.times { |n| puts fary.rand }

After rand_reset is invoked, the contents of the wrapped array are reset and can be "consumed" again.

Email addresses

This generates email addresses based on the first and last names, using the default domain of "example.com'. For "John Smith", a few examples: [e-mail], [e-mail], [e-mail], [e-mail], [e-mail], [e-mail], [e-mail]

Contributing

1. Fork it ( https://github.com/jpace/fakir/fork )
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request