Returns a list of the undefined instance methods defined in mod. The undefined methods of any ancestors are not included.
Similar to instance_method, searches public method only.
Returns the status of the global “abort on exception” condition.
The default is false
.
When set to true
, if any thread is aborted by an exception, the raised exception will be re-raised in the main thread.
Can also be specified by the global $DEBUG flag or command line option -d
.
See also ::abort_on_exception=
.
There is also an instance level method to set this for a specific thread, see abort_on_exception
.
When set to true
, if any thread is aborted by an exception, the raised exception will be re-raised in the main thread. Returns the new state.
Thread.abort_on_exception = true t1 = Thread.new do puts "In new thread" raise "Exception from thread" end sleep(1) puts "not reached"
This will produce:
In new thread prog.rb:4: Exception from thread (RuntimeError) from prog.rb:2:in `initialize' from prog.rb:2:in `new' from prog.rb:2
See also ::abort_on_exception
.
There is also an instance level method to set this for a specific thread, see abort_on_exception=
.
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=
.
Starts tracing object allocations from the ObjectSpace
extension module.
For example:
require 'objspace' class C include ObjectSpace def foo trace_object_allocations do obj = Object.new p "#{allocation_sourcefile(obj)}:#{allocation_sourceline(obj)}" end end end C.new.foo #=> "objtrace.rb:8"
This example has included the ObjectSpace
module to make it easier to read, but you can also use the ::trace_object_allocations
notation (recommended).
Note that this feature introduces a huge performance decrease and huge memory consumption.
Path to specification files of default gems.
Finds the user’s config file
Shortcut for defining multiple delegator methods, but with no provision for using a different name. The following two code samples have the same effect:
def_delegators :@records, :size, :<<, :map def_delegator :@records, :size def_delegator :@records, :<< def_delegator :@records, :map
Define method
as delegator instance method with an optional alias name ali
. Method
calls to ali
will be delegated to accessor.method
. accessor
should be a method name, instance variable name, or constant name. Use the full path to the constant if providing the constant name. Returns the name of the method defined.
class MyQueue CONST = 1 extend Forwardable attr_reader :queue def initialize @queue = [] end def_delegator :@queue, :push, :mypush def_delegator 'MyQueue::CONST', :to_i end q = MyQueue.new q.mypush 42 q.queue #=> [42] q.push 23 #=> NoMethodError q.to_i #=> 1
Sends a MOVE request to the server; returns an instance of a subclass of Net::HTTPResponse
.
The request is based on the Net::HTTP::Move
object created from string path
and initial headers hash initheader
.
http = Net::HTTP.new(hostname) http.move('/todos/1')
Sends a MOVE request to the server; returns an instance of a subclass of Net::HTTPResponse
.
The request is based on the Net::HTTP::Move
object created from string path
and initial headers hash initheader
.
http = Net::HTTP.new(hostname) http.move('/todos/1')
What does this dependency require?
Lists the external (to RubyGems) requirements that must be met for this gem to work. It’s simply information for the user.
Usage:
spec.requirements << 'libmagick, v6.0' spec.requirements << 'A good graphics card'
Set
requirements to req
, ensuring it is an array.
Is remote fetching enabled?
Performs a Miller-Rabin probabilistic primality test for bn
.
Deprecated in version 3.0. Use prime?
instead.
checks
and trial_div
parameters no longer have any effect.
Parses the configuration data read from io and returns the whole content as a Hash
.
Returns a hash of default options used by the Ruby
iseq compiler.
For details, see InstructionSequence.compile_option=
.
Sets the default values for various optimizations in the Ruby
iseq compiler.
Possible values for options
include true
, which enables all options, false
which disables all options, and nil
which leaves all options unchanged.
You can also pass a Hash
of options
that you want to change, any options not present in the hash will be left unchanged.
Possible option names (which are keys in options
) which can be set to true
or false
include:
:inline_const_cache
:instructions_unification
:operands_unification
:peephole_optimization
:specialized_instruction
:tailcall_optimization
Additionally, :debug_level
can be set to an integer.
These default options can be overwritten for a single run of the iseq compiler by passing any of the above values as the options
parameter to ::new
, ::compile
and ::compile_file
.