Returns the list of public methods accessible to obj. If the all parameter is set to false, only those methods in the receiver will be listed.
Similar to method, searches public method only.
Returns the message string with enhancements:
Includes the exception class name in the first line.
If the value of keyword highlight is true, includes bolding and underlining ANSI codes (see below) to enhance the appearance of the message.
Examples:
begin 1 / 0 rescue => x p x.message p x.detailed_message # Class name added. p x.detailed_message(highlight: true) # Class name, bolding, and underlining added. end
Output:
"divided by 0" "divided by 0 (ZeroDivisionError)" "\e[1mdivided by 0 (\e[1;4mZeroDivisionError\e[m\e[1m)\e[m"
This method is overridden by some gems in the Ruby standard library to add information:
An overriding method must be tolerant of passed keyword arguments, which may include (but may not be limited to):
:highlight.
:did_you_mean.
:error_highlight.
:syntax_suggest.
An overrriding method should also be careful with ANSI code enhancements; see Messages.
Return a list of the local variable names defined where this NameError exception was raised.
Internal use only.
Synonym for ENV.
Returns true if the given year is a leap year in the proleptic Gregorian calendar, false otherwise:
Date.gregorian_leap?(2000) # => true Date.gregorian_leap?(2001) # => false
Related: Date.julian_leap?.
Clears the entire screen and moves the cursor top-left corner.
You must require ‘io/console’ to use this method.
Waits until IO is readable and returns a truthy value, or a falsy value when times out. Returns a truthy value immediately when buffered data is available.
You must require ‘io/wait’ to use this method.
Waits until IO is writable and returns a truthy value or a falsy value when times out.
You must require ‘io/wait’ to use this method.
Calls the given block with each codepoint in the stream; returns self:
f = File.new('t.rus') a = [] f.each_codepoint {|c| a << c } a # => [1090, 1077, 1089, 1090] f.close
Returns an Enumerator if no block is given.
Related: IO#each_byte, IO#each_char.
Removes the named field from the object and returns the value the field contained if it was defined. You may optionally provide a block. If the field is not defined, the result of the block is returned, or a NameError is raised if no block was given.
require "ostruct" person = OpenStruct.new(name: "John", age: 70, pension: 300) person.delete_field!("age") # => 70 person # => #<OpenStruct name="John", pension=300>
Setting the value to nil will not remove the attribute:
person.pension = nil person # => #<OpenStruct name="John", pension=nil> person.delete_field('number') # => NameError person.delete_field('number') { 8675_309 } # => 8675309
Deletes every element of the set for which block evaluates to true, and returns self. Returns an enumerator if no block is given.
Iterates over each component of the path.
Pathname.new("/usr/bin/ruby").each_filename {|filename| ... }
# yields "usr", "bin", and "ruby".
Returns an Enumerator if no block was given.
enum = Pathname.new("/usr/bin/ruby").each_filename
# ... do stuff ...
enum.each { |e| ... }
# yields "usr", "bin", and "ruby".
This method is called when the parser found syntax error.
Returns an Addrinfo object for remote address obtained by getpeername.
Note that addrinfo.protocol is filled by 0.
TCPSocket.open("www.ruby-lang.org", 80) {|s| p s.remote_address #=> #<Addrinfo: 221.186.184.68:80 TCP> } TCPServer.open("127.0.0.1", 1728) {|serv| c = TCPSocket.new("127.0.0.1", 1728) s = serv.accept p s.remote_address #=> #<Addrinfo: 127.0.0.1:36504 TCP> }
With a block given, calls the block with each remaining codepoint in the stream; see Codepoint IO.
With no block given, returns an enumerator.
Invokes Release method of Dispatch interface of WIN32OLE object. You should not use this method because this method exists only for debugging WIN32OLE. The return value is reference counter of OLE object.
invokes Release method of Dispatch interface of WIN32OLE object. Usually, you do not need to call this method because Release method called automatically when WIN32OLE object garbaged.
Calls WIN32OLE#invoke method.