Sets a thread local with key to value. Note that these are local to threads, and not to fibers. Please see Thread#thread_variable_get and Thread#[] for more information.
Returns the status of the thread-local “abort on exception” condition for this thr.
The default is false.
See also abort_on_exception=.
There is also a class level method to set this for all threads, see ::abort_on_exception.
When set to true, if this thr is aborted by an exception, the raised exception will be re-raised in the main thread.
See also abort_on_exception.
There is also a class level method to set this for all threads, see ::abort_on_exception=.
Return all reachable objects from ‘obj’.
This method returns all reachable objects from ‘obj’.
If ‘obj’ has two or more references to the same object ‘x’, then returned array only includes one ‘x’ object.
If ‘obj’ is a non-markable (non-heap management) object such as true, false, nil, symbols and Fixnums (and Flonum) then it simply returns nil.
If ‘obj’ has references to an internal object, then it returns instances of ObjectSpace::InternalObjectWrapper class. This object contains a reference to an internal object and you can check the type of internal object with ‘type’ method.
If ‘obj’ is instance of ObjectSpace::InternalObjectWrapper class, then this method returns all reachable object from an internal object, which is pointed by ‘obj’.
With this method, you can find memory leaks.
This method is only expected to work except with C Ruby.
Example:
ObjectSpace.reachable_objects_from(['a', 'b', 'c']) #=> [Array, 'a', 'b', 'c'] ObjectSpace.reachable_objects_from(['a', 'a', 'a']) #=> [Array, 'a', 'a', 'a'] # all 'a' strings have different object id ObjectSpace.reachable_objects_from([v = 'a', v, v]) #=> [Array, 'a'] ObjectSpace.reachable_objects_from(1) #=> nil # 1 is not markable (heap managed) object
Calls CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON). Starts tracking memory allocations. See also OpenSSL.print_mem_leaks.
This is available only when built with a capable OpenSSL and –enable-debug configure option.
Set terminal size to rows and columns.
See GNU Readline’s rl_set_screen_size function.
Raises NotImplementedError if the using readline library does not support.
Returns the terminal’s rows and columns.
See GNU Readline’s rl_get_screen_size function.
Raises NotImplementedError if the using readline library does not support.
Specifies a Proc object proc to call after the first prompt has been printed and just before readline starts reading input characters.
See GNU Readline’s rl_pre_input_hook variable.
Raises ArgumentError if proc does not respond to the call method.
Raises NotImplementedError if the using readline library does not support.
Returns a Proc object proc to call after the first prompt has been printed and just before readline starts reading input characters. The default is nil.
Raises NotImplementedError if the using readline library does not support.
Verify internal consistency.
This method is implementation specific. Now this method checks generational consistency if RGenGC is supported.
Returns information about the most recent garbage collection.
Returns a list of paths matching glob from the latest gems that can be used by a gem to pick up features from other gems. For example:
Gem.find_latest_files('rdoc/discover').each do |path| load path end
if check_load_path is true (the default), then find_latest_files also searches $LOAD_PATH for files as well as gems.
Unlike find_files, find_latest_files will return only files from the latest version of a gem.
Returns the latest release version of RubyGems.
Deduce Ruby’s –program-prefix and –program-suffix from its install name
Default options for gem commands for Ruby packagers.
The options here should be structured as an array of string “gem” command names as keys and a string of the default options as values.
Example:
def self.operating_system_defaults
{
'install' => '--no-rdoc --no-ri --env-shebang',
'update' => '--no-rdoc --no-ri --env-shebang'
}
end
Set the default id conversion object.
This is expected to be an instance such as DRb::DRbIdConv that responds to to_id and to_obj that can convert objects to and from DRb references.
See DRbServer#default_id_conv.
Set the default id conversion object.
This is expected to be an instance such as DRb::DRbIdConv that responds to to_id and to_obj that can convert objects to and from DRb references.
See DRbServer#default_id_conv.
Returns whether or not the struct of type type contains member. If it does not, or the struct type can’t be found, then false is returned. You may optionally specify additional headers in which to look for the struct (in addition to the common header files).
If found, a macro is passed as a preprocessor constant to the compiler using the type name and the member name, in uppercase, prepended with HAVE_.
For example, if have_struct_member('struct foo', 'bar') returned true, then the HAVE_STRUCT_FOO_BAR preprocessor macro would be passed to the compiler.
HAVE_ST_BAR is also defined for backward compatibility.
Generates URL-encoded form data from given enum.
This generates application/x-www-form-urlencoded data defined in HTML5 from given an Enumerable object.
This internally uses URI.encode_www_form_component(str).
This method doesn’t convert the encoding of given items, so convert them before calling this method if you want to send data as other than original encoding or mixed encoding data. (Strings which are encoded in an HTML5 ASCII incompatible encoding are converted to UTF-8.)
This method doesn’t handle files. When you send a file, use multipart/form-data.
This refers url.spec.whatwg.org/#concept-urlencoded-serializer
URI.encode_www_form([["q", "ruby"], ["lang", "en"]]) #=> "q=ruby&lang=en" URI.encode_www_form("q" => "ruby", "lang" => "en") #=> "q=ruby&lang=en" URI.encode_www_form("q" => ["ruby", "perl"], "lang" => "en") #=> "q=ruby&q=perl&lang=en" URI.encode_www_form([["q", "ruby"], ["q", "perl"], ["lang", "en"]]) #=> "q=ruby&q=perl&lang=en"
Decodes URL-encoded form data from given str.
This decodes application/x-www-form-urlencoded data and returns an array of key-value arrays.
This refers url.spec.whatwg.org/#concept-urlencoded-parser, so this supports only &-separator, and doesn’t support ;-separator.
ary = URI.decode_www_form("a=1&a=2&b=3") ary #=> [['a', '1'], ['a', '2'], ['b', '3']] ary.assoc('a').last #=> '1' ary.assoc('b').last #=> '3' ary.rassoc('a').last #=> '2' Hash[ary] #=> {"a"=>"2", "b"=>"3"}
Returns strongly connected components as an array of arrays of nodes. The array is sorted from children to parents. Each elements of the array represents a strongly connected component.
class G include TSort def initialize(g) @g = g end def tsort_each_child(n, &b) @g[n].each(&b) end def tsort_each_node(&b) @g.each_key(&b) end end graph = G.new({1=>[2, 3], 2=>[4], 3=>[2, 4], 4=>[]}) p graph.strongly_connected_components #=> [[4], [2], [3], [1]] graph = G.new({1=>[2], 2=>[3, 4], 3=>[2], 4=>[]}) p graph.strongly_connected_components #=> [[4], [2, 3], [1]]
Returns strongly connected components as an array of arrays of nodes. The array is sorted from children to parents. Each elements of the array represents a strongly connected component.
The graph is represented by each_node and each_child. each_node should have call method which yields for each node in the graph. each_child should have call method which takes a node argument and yields for each child node.
g = {1=>[2, 3], 2=>[4], 3=>[2, 4], 4=>[]} each_node = lambda {|&b| g.each_key(&b) } each_child = lambda {|n, &b| g[n].each(&b) } p TSort.strongly_connected_components(each_node, each_child) #=> [[4], [2], [3], [1]] g = {1=>[2], 2=>[3, 4], 3=>[2], 4=>[]} each_node = lambda {|&b| g.each_key(&b) } each_child = lambda {|n, &b| g[n].each(&b) } p TSort.strongly_connected_components(each_node, each_child) #=> [[4], [2, 3], [1]]
Should be implemented by a extended class.
tsort_each_node is used to iterate for all nodes over a graph.
Should be implemented by a extended class.
tsort_each_child is used to iterate for child nodes of node.