diff options
Diffstat (limited to 'array.rb')
| -rw-r--r-- | array.rb | 98 |
1 files changed, 1 insertions, 97 deletions
@@ -49,8 +49,6 @@ class Array # But +self+ may contain duplicates: # a = [1, 1, 1, 2, 2, 3] # a.sample(a.size * 2) # => [1, 1, 3, 2, 1, 2] - # The argument +n+ must be a non-negative numeric value. - # The order of the result array is unrelated to the order of +self+. # Returns a new empty \Array if +self+ is empty. # # The optional +random+ argument will be used as the random number generator: @@ -58,100 +56,6 @@ class Array # a.sample(random: Random.new(1)) #=> 6 # a.sample(4, random: Random.new(1)) #=> [6, 10, 9, 2] def sample(n = (ary = false), random: Random) - if Primitive.mandatory_only? - # Primitive.cexpr! %{ rb_ary_sample(self, rb_cRandom, Qfalse, Qfalse) } - Primitive.ary_sample0 - else - # Primitive.cexpr! %{ rb_ary_sample(self, random, n, ary) } - Primitive.ary_sample(random, n, ary) - end - end - - # call-seq: - # array.first -> object or nil - # array.first(n) -> new_array - # - # Returns elements from +self+; does not modify +self+. - # - # When no argument is given, returns the first element: - # - # a = [:foo, 'bar', 2] - # a.first # => :foo - # a # => [:foo, "bar", 2] - # - # If +self+ is empty, returns +nil+. - # - # When non-negative Integer argument +n+ is given, - # returns the first +n+ elements in a new \Array: - # - # a = [:foo, 'bar', 2] - # a.first(2) # => [:foo, "bar"] - # - # If <tt>n >= array.size</tt>, returns all elements: - # - # a = [:foo, 'bar', 2] - # a.first(50) # => [:foo, "bar", 2] - # - # If <tt>n == 0</tt> returns an new empty \Array: - # - # a = [:foo, 'bar', 2] - # a.first(0) # [] - # - # Related: #last. - def first n = unspecified = true - if Primitive.mandatory_only? - Primitive.attr! :leaf - Primitive.cexpr! %q{ ary_first(self) } - else - if unspecified - Primitive.cexpr! %q{ ary_first(self) } - else - Primitive.cexpr! %q{ ary_take_first_or_last_n(self, NUM2LONG(n), ARY_TAKE_FIRST) } - end - end - end - - # call-seq: - # array.last -> object or nil - # array.last(n) -> new_array - # - # Returns elements from +self+; +self+ is not modified. - # - # When no argument is given, returns the last element: - # - # a = [:foo, 'bar', 2] - # a.last # => 2 - # a # => [:foo, "bar", 2] - # - # If +self+ is empty, returns +nil+. - # - # When non-negative Integer argument +n+ is given, - # returns the last +n+ elements in a new \Array: - # - # a = [:foo, 'bar', 2] - # a.last(2) # => ["bar", 2] - # - # If <tt>n >= array.size</tt>, returns all elements: - # - # a = [:foo, 'bar', 2] - # a.last(50) # => [:foo, "bar", 2] - # - # If <tt>n == 0</tt>, returns an new empty \Array: - # - # a = [:foo, 'bar', 2] - # a.last(0) # [] - # - # Related: #first. - def last n = unspecified = true - if Primitive.mandatory_only? - Primitive.attr! :leaf - Primitive.cexpr! %q{ ary_last(self) } - else - if unspecified - Primitive.cexpr! %q{ ary_last(self) } - else - Primitive.cexpr! %q{ ary_take_first_or_last_n(self, NUM2LONG(n), ARY_TAKE_LAST) } - end - end + Primitive.rb_ary_sample(random, n, ary) end end |