Class: MetalArchives::Collection

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
lib/metal_archives/collection.rb

Overview

Enumerable collection over a paginated resource

Instance Method Summary collapse

Constructor Details

#initialize(proc) ⇒ Collection

Construct a new Collection

proc

Proc or lambda, called repeatedly when iterating. Should return an array of results (stateful), should return an empty array when there are no results left.

[View source]

17
18
19
 
# File 'lib/metal_archives/collection.rb', line 17

def initialize(proc)
  @proc = proc
end

Instance Method Details

#each(&block) ⇒ Object

Calls the given block once for each element, passing that element as a parameter. If no block is given, an Enumerator is returned.

[View source]

25
26
27
28
29
30
31
32
33
34
35
 
# File 'lib/metal_archives/collection.rb', line 25

def each(&block)
  return to_enum :each unless block

  loop do
    items = instance_exec(&@proc)

    items.each(&block)

    break if items.empty?
  end
end

#empty? ⇒ Boolean

Returns:

  • (Boolean)
[View source]

37
38
39
 
# File 'lib/metal_archives/collection.rb', line 37

def empty?
  first.nil?
end