Raises PStore::Error
if the calling code is not in a PStore#transaction
.
Returns the original name of the method.
class C def foo; end alias bar foo end C.instance_method(:bar).original_name # => :foo
Returns the original name of the method.
class C def foo; end alias bar foo end C.instance_method(:bar).original_name # => :foo
Returns the number of threads waiting on the queue.
Returns the number of threads waiting on the queue.
Compares each entry in enum with value or passes to block. Returns the index for the first for which the evaluated value is non-false. If no object matches, returns nil
If neither block nor argument is given, an enumerator is returned instead.
(1..10).find_index { |i| i % 5 == 0 && i % 7 == 0 } #=> nil (1..100).find_index { |i| i % 5 == 0 && i % 7 == 0 } #=> 34 (1..100).find_index(50) #=> 49
Adds aProc as a finalizer, to be called after obj was destroyed. The object ID of the obj will be passed as an argument to aProc. If aProc is a lambda or method, make sure it can be called with a single argument.
Removes all finalizers for obj.
Parse a YAML string in yaml
. Returns the Psych::Nodes::Stream
. This method can handle multiple YAML documents contained in yaml
. filename
is used in the exception message if a Psych::SyntaxError
is raised.
If a block is given, a Psych::Nodes::Document
node will be yielded to the block as it’s being parsed.
Raises a Psych::SyntaxError
when a YAML syntax error is detected.
Example:
Psych.parse_stream("---\n - a\n - b") # => #<Psych::Nodes::Stream:0x00> Psych.parse_stream("--- a\n--- b") do |node| node # => #<Psych::Nodes::Document:0x00> end begin Psych.parse_stream("--- `", filename: "file.txt") rescue Psych::SyntaxError => ex ex.file # => 'file.txt' ex.message # => "(file.txt): found character that cannot start any token" end
Raises a TypeError
when NilClass
is passed.
See Psych::Nodes
for more information about YAML AST.
Dump a list of objects as separate documents to a document stream.
Example:
Psych.dump_stream("foo\n ", {}) # => "--- ! \"foo\\n \"\n--- {}\n"
Load multiple documents given in yaml
. Returns the parsed documents as a list. If a block is given, each document will be converted to Ruby and passed to the block during parsing
Example:
Psych.load_stream("--- foo\n...\n--- bar\n...") # => ['foo', 'bar'] list = [] Psych.load_stream("--- foo\n...\n--- bar\n...") do |ruby| list << ruby end list # => ['foo', 'bar']
Adds a pre-install hook that will be passed an Gem::Installer
instance when Gem::Installer#install
is called. If the hook returns false
then the install will be aborted.
Adds a pre-uninstall hook that will be passed an Gem::Uninstaller
instance and the spec that will be uninstalled when Gem::Uninstaller#uninstall
is called
Safely write a file in binary mode on all platforms.
Hard links a file system entry src
to dest
. If src
is a directory, this method links its contents recursively.
Both of src
and dest
must be a path name. src
must exist, dest
must not exist.
If dereference_root
is true, this method dereferences the tree root.
If remove_destination
is true, this method removes each destination file before copy.
Hard links a file system entry src
to dest
. If src
is a directory, this method links its contents recursively.
Both of src
and dest
must be a path name. src
must exist, dest
must not exist.
If dereference_root
is true, this method dereferences the tree root.
If remove_destination
is true, this method removes each destination file before copy.
Copies stream src
to dest
. src
must respond to read(n) and dest
must respond to write(str).
Copies stream src
to dest
. src
must respond to read(n) and dest
must respond to write(str).
Returns true if the contents of a stream a
and b
are identical.
Returns true if the contents of a stream a
and b
are identical.
Takes a hash as its argument. The key is a symbol or an array of symbols. These symbols correspond to method names, instance variable names, or constant names (see def_delegator
). The value is the accessor to which the methods will be delegated.
Takes a hash as its argument. The key is a symbol or an array of symbols. These symbols correspond to method names. The value is the accessor to which the methods will be delegated.