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| -rw-r--r-- | ChangeLog | 5 | ||||
| -rw-r--r-- | lib/set.rb | 13 |
2 files changed, 18 insertions, 0 deletions
@@ -1,3 +1,8 @@ +Tue Jan 28 15:17:59 2014 Zachary Scott <[email protected]> + + * lib/set.rb: [DOC] Add examples for Set#intersect? and Set#disjoint? + Patch by xavier nayrac [Bug #9331] [ci skip] + Tue Jan 28 15:12:22 2014 Zachary Scott <[email protected]> * ext/zlib/zlib.c (rb_zlib_adler32): [DOC] Add example for adler32 diff --git a/lib/set.rb b/lib/set.rb index e30d590c5d..3aebb89376 100644 --- a/lib/set.rb +++ b/lib/set.rb @@ -240,6 +240,12 @@ class Set # Returns true if the set and the given set have at least one # element in common. + # + # e.g.: + # + # require 'set' + # Set[1, 2, 3].intersect? Set[4, 5] # => false + # Set[1, 2, 3].intersect? Set[3, 4] # => true def intersect?(set) set.is_a?(Set) or raise ArgumentError, "value must be a set" if size < set.size @@ -251,6 +257,13 @@ class Set # Returns true if the set and the given set have no element in # common. This method is the opposite of +intersect?+. + # + # e.g.: + # + # require 'set' + # Set[1, 2, 3].disjoint? Set[3, 4] # => false + # Set[1, 2, 3].disjoint? Set[4, 5] # => true + def disjoint?(set) !intersect?(set) end |