Returns an array containing all elements in the set.
Set[1, 2].to_a #=> [1, 2] Set[1, 'c', :s].to_a #=> [1, "c", :s]
Equivalent to Set#delete_if
, but returns nil if no changes were made. Returns an enumerator if no block is given.
Resets the internal state after modification to existing elements and returns self.
Elements will be reindexed and deduplicated.
Returns the values in self
as an array:
Customer = Struct.new(:name, :address, :zip) joe = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345) joe.to_a # => ["Joe Smith", "123 Maple, Anytown NC", 12345]
Related: members
.
Returns a hash containing the name and value for each member:
Customer = Struct.new(:name, :address, :zip) joe = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345) h = joe.to_h h # => {:name=>"Joe Smith", :address=>"123 Maple, Anytown NC", :zip=>12345}
If a block is given, it is called with each name/value pair; the block should return a 2-element array whose elements will become a key/value pair in the returned hash:
h = joe.to_h{|name, value| [name.upcase, value.to_s.upcase]} h # => {:NAME=>"JOE SMITH", :ADDRESS=>"123 MAPLE, ANYTOWN NC", :ZIP=>"12345"}
Raises ArgumentError
if the block returns an inappropriate value.
Returns the values in self
as an array:
Customer = Struct.new(:name, :address, :zip) joe = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345) joe.to_a # => ["Joe Smith", "123 Maple, Anytown NC", 12345]
Related: members
.
Returns a string representation of self
:
Customer = Struct.new(:name, :address, :zip) # => Customer joe = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345) joe.inspect # => "#<struct Customer name=\"Joe Smith\", address=\"123 Maple, Anytown NC\", zip=12345>"
Returns a string representation of self
(not including the leading colon):
:foo.to_s # => "foo"
Related: Symbol#inspect
, Symbol#name
.
The opposite of Pathname#absolute?
It returns false
if the pathname begins with a slash.
p = Pathname.new('/im/sure') p.relative? #=> false p = Pathname.new('not/so/sure') p.relative? #=> true
Returns the children of the directory (files and subdirectories, not recursive) as an array of Pathname
objects.
By default, the returned pathnames will have enough information to access the files. If you set with_directory
to false
, then the returned pathnames will contain the filename only.
For example:
pn = Pathname("/usr/lib/ruby/1.8") pn.children # -> [ Pathname:/usr/lib/ruby/1.8/English.rb, Pathname:/usr/lib/ruby/1.8/Env.rb, Pathname:/usr/lib/ruby/1.8/abbrev.rb, ... ] pn.children(false) # -> [ Pathname:English.rb, Pathname:Env.rb, Pathname:abbrev.rb, ... ]
Note that the results never contain the entries .
and ..
in the directory because they are not children.
Recursively deletes a directory, including all directories beneath it.
See FileUtils.rm_rf
Return the path as a String
.
to_path
is implemented so Pathname
objects are usable with File.open
, etc.
Returns the real (absolute) pathname for self
in the actual filesystem.
Does not contain symlinks or useless dots, ..
and .
.
All components of the pathname must exist when this method is called.
Returns the real (absolute) pathname of self
in the actual filesystem.
Does not contain symlinks or useless dots, ..
and .
.
The last component of the real pathname can be nonexistent.
Returns all the bytes from the file, or the first N
if specified.
See File.binread
.
See File.lstat
.