1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
|
module Stamp
module Emitters
class Composite
include Enumerable
attr_reader :emitters
def initialize(emitters=[])
@emitters = emitters
end
def format(target)
# NOTE using #each to build string because benchmarking shows
# that it's ~20% faster than .map.join('')
result = ''
emitters.each { |e| result << e.format(target).to_s }
result
end
def <<(emitter)
Array(emitter).each { |e| emitters << e }
end
def each(&block)
emitters.each(&block)
end
def -(others)
emitters - Array(others)
end
# Replace each element as we iterate with the result of the given block.
def replace_each!
emitters.each_with_index do |emitter, index|
emitters[index] = yield(emitter)
end
self
end
end
end
end
|
