Sha256: c63e5a248530bc69189eda3b72d49a15ed038978e2d5607380c42cca1ef214f1
Contents?: true
Size: 757 Bytes
Versions: 34
Compression:
Stored size: 757 Bytes
Contents
class Array
def reduce(initial_value = 0, &proc)
calculated_value = initial_value
self.each_with_index do |e, i|
calculated_value = yield(calculated_value, e, size, i)
end
calculated_value
end
def to_freq_hash
freq = {}
each do |e|
freq[e] = freq[e].to_i + 1
end
freq
end
def to_summarized_hash(operation_symbol = :+)
sums = {}
each do |e|
key, value = yield(e)
if sums[key]
sums[key] = sums[key].send(operation_symbol, value)
else
sums[key] = value
end
end
sums
end
def to_grouped_hash
groups = {}
each do |e|
key, value = yield(e)
groups[key] ||= []
groups[key] << value
end
groups
end
end
Version data entries
34 entries across 34 versions & 1 rubygems