Sha256: e2533f68fa271e5155415c94fbba06c6b043faed5d1cce3a29677afc1e05d49d
Contents?: true
Size: 1.07 KB
Versions: 37
Compression:
Stored size: 1.07 KB
Contents
class Array
# Method for stably sorting elements in an array on multiple attributes.
#
# * Pass the method a block with two arrays containing the attributes for which the
# elements should be subsequently sorted. The first attribute is applied last.
# If for some attribute the sort order should be reversed, the parameters x and y can
# be exchanged between the arrays.
#
# ==== Example
# my_array.stable_sort_by{|x, y| [
# x.attribute1,
# y.attribute2,
# y.attribute3,
# y.attribute4
# ] <=> [
# y.attribute1,
# x.attribute2,
# x.attribute3,
# x.attribute4
# ]}
#
def stable_sort_by
sort do |x, y|
if not x
-1
elsif not y
1
else
if block_given?
yield x, y
else
x <=> y
end
end
end
end
end
Version data entries
37 entries across 37 versions & 1 rubygems