Returns the group most recently added to the stack.
Contrived example:
out = ""
=> ""
q = PrettyPrint.new(out)
=> #<PrettyPrint:0x82f85c0 @output="", @maxwidth=79, @newline="\n", @genspace=#<Proc:0x82f8368@/home/vbatts/.rvm/rubies/ruby-head/lib/ruby/2.0.0/prettyprint.rb:82 (lambda)>, @output_width=0, @buffer_width=0, @buffer=[], @group_stack=[#<PrettyPrint::Group:0x82f8138 @depth=0, @breakables=[], @break=false>], @group_queue=#<PrettyPrint::GroupQueue:0x82fb7c0 @queue=[[#<PrettyPrint::Group:0x82f8138 @depth=0, @breakables=[], @break=false>]]>, @indent=0>
q.group {
q.text q.current_group.inspect
q.text q.newline
q.group(q.current_group.depth + 1) {
q.text q.current_group.inspect
q.text q.newline
q.group(q.current_group.depth + 1) {
q.text q.current_group.inspect
q.text q.newline
q.group(q.current_group.depth + 1) {
q.text q.current_group.inspect
q.text q.newline
}
}
}
}
=> 284
puts out
#<PrettyPrint::Group:0x8354758 @depth=1, @breakables=[], @break=false>
#<PrettyPrint::Group:0x8354550 @depth=2, @breakables=[], @break=false>
#<PrettyPrint::Group:0x83541cc @depth=3, @breakables=[], @break=false>
#<PrettyPrint::Group:0x8347e54 @depth=4, @breakables=[], @break=false>
Returns the names of the binding’s local variables as symbols.
def foo a = 1 2.times do |n| binding.local_variables #=> [:a, :n] end end
This method is the short version of the following code:
binding.eval("local_variables")
Returns the Ruby source filename and line number of the binding object.
Returns the location where the Proc was defined. The returned Array contains:
(1) the Ruby source filename (2) the line number where the definition starts (3) the column number where the definition starts (4) the line number where the definition ends (5) the column number where the definitions ends
This method will return nil if the Proc was not defined in Ruby (i.e. native).
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 location where the method was defined. The returned Array contains:
(1) the Ruby source filename (2) the line number where the definition starts (3) the column number where the definition starts (4) the line number where the definition ends (5) the column number where the definitions ends
This method will return nil if the method was not defined in Ruby (i.e. native).
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 location where the method was defined. The returned Array contains:
(1) the Ruby source filename (2) the line number where the definition starts (3) the column number where the definition starts (4) the line number where the definition ends (5) the column number where the definitions ends
This method will return nil if the method was not defined in Ruby (i.e. native).
Returns an array of the names of the thread-local variables (as Symbols).
thr = Thread.new do Thread.current.thread_variable_set(:cat, 'meow') Thread.current.thread_variable_set("dog", 'woof') end thr.join #=> #<Thread:0x401b3f10 dead> thr.thread_variables #=> [:dog, :cat]
Note that these are not fiber local variables. Please see Thread#[] and Thread#thread_variable_get for more details.
Returns true if the given string (or symbol) exists as a thread-local variable.
me = Thread.current me.thread_variable_set(:oliver, "a") me.thread_variable?(:oliver) #=> true me.thread_variable?(:stanley) #=> false
Note that these are not fiber local variables. Please see Thread#[] and Thread#thread_variable_get for more details.
Returns the return value from :return, :c_return, and :b_return events.
Returns the compiled source code (String) from eval methods on the :script_compiled event. If loaded from a file, it returns nil.
Returns an array of the names of global variables. This includes special regexp global variables such as $~ and $+, but does not include the numbered regexp global variables ($1, $2, etc.).
global_variables.grep /std/ #=> [:$stdin, :$stdout, :$stderr]
Returns the names of the current local variables.
fred = 1 for i in 1..10 # ... end local_variables #=> [:fred, :i]
Returns the source file origin from the given object.
See ::trace_object_allocations for more information and examples.
Returns the original line from source for from the given object.
See ::trace_object_allocations for more information and examples.
Constant time memory comparison. Inputs are hashed using SHA-256 to mask the length of the secret. Returns true if the strings are identical, false otherwise.
Returns true if the named file is writable by the real user and group id of this process. See access(3).
Note that some OS-level security features may cause this to return true even though the file is not writable by the real user/group.
If file_name is writable by others, returns an integer representing the file permission bits of file_name. Returns nil otherwise. The meaning of the bits is platform dependent; on Unix systems, see stat(2).
file_name can be an IO object.
File.world_writable?("/tmp") #=> 511 m = File.world_writable?("/tmp") sprintf("%o", m) #=> "777"
Safely write a file in binary mode on all platforms.
Is this platform Solaris?
An Array of the default sources that come with RubyGems
Accepts a Thread::Backtrace::Location object and returns a Prism::Node corresponding to the backtrace location in the source code.
Returns the language-dependent source file name for configuration checks.