Module: JB3::Util

Extended by:
Color
Defined in:
lib/jb3.rb

Defined Under Namespace

Modules: Color

Class Method Summary collapse

Methods included from Color

bold, green, grey, light_blue, light_grey, magenta, red, yellow

Class Method Details

.omit(hash, keys) ⇒ Object

Omit keys from a hash



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# File 'lib/jb3.rb', line 43

def self.omit(hash, keys)
  hash.reject { |key,| keys.include?(key) }
end

.omit!(hash, keys) ⇒ Object

Same as #omit, but all keys are validated.



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# File 'lib/jb3.rb', line 48

def self.omit!(hash, keys)
  keys.each do |key|
    next if hash.key?(key)

    raise("Expected #{key.inspect} to exist in target hash!")
  end

  omit(hash, keys)
end

.one(array) ⇒ Object

Raises:

  • (SizeError) 


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# File 'lib/jb3.rb', line 58

def self.one(array)
  return array.first if array.one?

  raise SizeError, array.size
end

.slice!(hash, keys) ⇒ Object 



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# File 'lib/jb3.rb', line 64

def self.slice!(hash, keys)
  hash.slice(*keys).tap do |slice|
    raise "Expected #{keys - slice.keys} to be present" unless slice.size.equal?(keys.size)
  end
end