Results for: "Pathname"

Parses a C prototype signature

If Hash tymap is provided, the return value and the arguments from the signature are expected to be keys, and the value will be the C type to be looked up.

Example:

require 'fiddle/import'

include Fiddle::CParser
  #=> Object

parse_signature('double sum(double, double)')
  #=> ["sum", Fiddle::TYPE_DOUBLE, [Fiddle::TYPE_DOUBLE, Fiddle::TYPE_DOUBLE]]

parse_signature('void update(void (*cb)(int code))')
  #=> ["update", Fiddle::TYPE_VOID, [Fiddle::TYPE_VOIDP]]

parse_signature('char (*getbuffer(void))[80]')
  #=> ["getbuffer", Fiddle::TYPE_VOIDP, []]

Calls the block with each field key:

res = Net::HTTP.get_response(hostname, '/todos/1')
res.each_key do |key|
  p key if key.start_with?('c')
end

Output:

"content-type"
"connection"
"cache-control"
"cf-cache-status"
"cf-ray"

Returns an enumerator if no block is given.

Net::HTTPHeader#each_name is an alias for Net::HTTPHeader#each_key.

Get the user ID by the name. If the user is not found, ArgumentError will be raised.

Process::UID.from_name("root") #=> 0
Process::UID.from_name("nosuchuser") #=> can't find user for nosuchuser (ArgumentError)

Get the group ID by the name. If the group is not found, ArgumentError will be raised.

Process::GID.from_name("wheel") #=> 0
Process::GID.from_name("nosuchgroup") #=> can't find group for nosuchgroup (ArgumentError)

Example:

x.foo = 1
 ^^^^^^
x[42] = 1
 ^^^^^^

Compile a AlternationPatternNode node

Compile a OptionalParameterNode node

Dispatch enter and leave events for AlternationPatternNode nodes and continue walking the tree.

Dispatch enter and leave events for OptionalParameterNode nodes and continue walking the tree.

Copy a AlternationPatternNode node

Copy a OptionalParameterNode node

in foo | bar

Return the best specification that contains the file matching path amongst the specs that are not activated.

The index to insert activated gem paths into the $LOAD_PATH. The activated gem’s paths are inserted before site lib directory by default.

Add a list of paths to the $LOAD_PATH at the proper place.

Sets the server hostname used for SNI. This needs to be set before SSLSocket#connect.

The name of this activation request’s specification

The name of the gem this dependency request is requesting.

The name of the gem for this specification

Returns the file name of this frame. This will generally be an absolute path, unless the frame is in the main script, in which case it will be the script location passed on the command line.

For example, using caller_locations.rb from Thread::Backtrace::Location

loc = c(0..1).first
loc.path #=> caller_locations.rb

Calls the block with each repeated permutation of length n of the elements of self; each permutation is an Array; returns self. The order of the permutations is indeterminate.

When a block and a positive Integer argument n are given, calls the block with each n-tuple repeated permutation of the elements of self. The number of permutations is self.size**n.

n = 1:

a = [0, 1, 2]
a.repeated_permutation(1) {|permutation| p permutation }

Output:

[0]
[1]
[2]

n = 2:

a.repeated_permutation(2) {|permutation| p permutation }

Output:

[0, 0]
[0, 1]
[0, 2]
[1, 0]
[1, 1]
[1, 2]
[2, 0]
[2, 1]
[2, 2]

If n is zero, calls the block once with an empty Array.

If n is negative, does not call the block:

a.repeated_permutation(-1) {|permutation| fail 'Cannot happen' }

Returns a new Enumerator if no block given:

a = [0, 1, 2]
a.repeated_permutation(2) # => #<Enumerator: [0, 1, 2]:permutation(2)>

Using Enumerators, it’s convenient to show the permutations and counts for some values of n:

e = a.repeated_permutation(0)
e.size # => 1
e.to_a # => [[]]
e = a.repeated_permutation(1)
e.size # => 3
e.to_a # => [[0], [1], [2]]
e = a.repeated_permutation(2)
e.size # => 9
e.to_a # => [[0, 0], [0, 1], [0, 2], [1, 0], [1, 1], [1, 2], [2, 0], [2, 1], [2, 2]]

Imports methods from modules. Unlike Module#include, Refinement#import_methods copies methods and adds them into the refinement, so the refinement is activated in the imported methods.

Note that due to method copying, only methods defined in Ruby code can be imported.

module StrUtils
  def indent(level)
    ' ' * level + self
  end
end

module M
  refine String do
    import_methods StrUtils
  end
end

using M
"foo".indent(3)
#=> "   foo"

module M
  refine String do
    import_methods Enumerable
    # Can't import method which is not defined with Ruby code: Enumerable#drop
  end
end