Class: Array

Inherits:
Object show all
Defined in:
lib/core/array.rb

Instance Method Summary collapse

Instance Method Details

#collect_with_index(&block) ⇒ Object 



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# File 'lib/core/array.rb', line 7

def collect_with_index &block
  self.enum_for(:each_with_index).collect &block
end

#rotate ⇒ Object

Rotate an array Example:

arr = %w(a b c d e f)
arr2 = arr.clone.rotate

arr.zip(arr2) => 
[["a", "b"], ["b", "c"], ["c", "d"], ["d", "e"], ["e", "f"], ["f", "a"]]



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# File 'lib/core/array.rb', line 39

def rotate
  push shift
end

#select_with_hash(conditions = {}) ⇒ Object

Example nodes.select_with_hash(:status=>‘running’)



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# File 'lib/core/array.rb', line 12

def select_with_hash(conditions={})
  return self if conditions.empty?
  select do |node|
    conditions.any? do |k,v|
      ( node.has_key?(k) && node[k]==v ) or ( node.respond_to?(k) && node.send(k)==v )
    end
  end
end

#swap!(a, b) ⇒ Object

Swap elements of an array



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# File 'lib/core/array.rb', line 27

def swap!(a,b)
  self[a], self[b] = self[b], self[a]
  self
end

#wrapping_next(id) ⇒ Object 



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# File 'lib/core/array.rb', line 21

def wrapping_next(id)
  raise "Element #{id} not in array" unless index(id)
  index(id) >= size-1 ? at(0) : at(index(id)+1)
end

#zip_offset(offset = 0) ⇒ Object 



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# File 'lib/core/array.rb', line 43

def zip_offset(offset=0)
  arr2 = self.dup
  
  out = []
  self.each_with_index do |ele,i|
    break if i == (self.size - offset)
    out[i] = [ele, arr2[i+1]]
  end
  out
end