Iterates the given block for each element with an arbitrary object, obj
, and returns obj
If no block is given, returns a new Enumerator
.
to_three = Enumerator.new do |y| 3.times do |x| y << x end end to_three_with_string = to_three.with_object("foo") to_three_with_string.each do |x,string| puts "#{string}: #{x}" end # => foo:0 # => foo:1 # => foo:2
Returns formatted string of exception. The returned string is formatted using the same format that Ruby uses when printing an uncaught exceptions to stderr.
If highlight is true
the default error handler will send the messages to a tty.
order must be either of :top
or :bottom
, and places the error message and the innermost backtrace come at the top or the bottom.
The default values of these options depend on $stderr
and its tty?
at the timing of a call.
Returns any backtrace associated with the exception. This method is similar to Exception#backtrace
, but the backtrace is an array of Thread::Backtrace::Location
.
This method is not affected by Exception#set_backtrace()
.
Deserializes JSON
string by constructing new Exception
object with message m
and backtrace b
serialized with to_json
Return true if the caused method was called as private.
When this module is included in another, Ruby calls append_features
in this module, passing it the receiving module in mod. Ruby’s default implementation is to add the constants, methods, and module variables of this module to mod if this module has not already been added to mod or one of its ancestors. See also Module#include
.
When this module is prepended in another, Ruby calls prepend_features
in this module, passing it the receiving module in mod. Ruby’s default implementation is to overlay the constants, methods, and module variables of this module to mod if this module has not already been added to mod or one of its ancestors. See also Module#prepend
.
Creates instance variables and corresponding methods that return the value of each instance variable. Equivalent to calling “attr
:name” on each name in turn. String
arguments are converted to symbols.
Creates an accessor method to allow assignment to the attribute symbol.id2name
. String
arguments are converted to symbols.
Defines a named attribute for this module, where the name is symbol.id2name
, creating an instance variable (@name
) and a corresponding access method to read it. Also creates a method called name=
to set the attribute. String
arguments are converted to symbols.
module Mod attr_accessor(:one, :two) end Mod.instance_methods.sort #=> [:one, :one=, :two, :two=]
Makes a list of existing constants private.
Makes a list of existing constants deprecated. Attempt to refer to them will produce a warning.
module HTTP NotFound = Exception.new NOT_FOUND = NotFound # previous version of the library used this name deprecate_constant :NOT_FOUND end HTTP::NOT_FOUND # warning: constant HTTP::NOT_FOUND is deprecated
Deserializes JSON
string by converting numerator value n
, denominator value d
, to a Rational
object.
Returns true if the given ordinal date is valid, and false if not.
Date.valid_ordinal?(2001,34) #=> true Date.valid_ordinal?(2001,366) #=> false
Returns true if the given calendar date is valid, and false if not. Valid in this context is whether the arguments passed to this method would be accepted by ::new
.
Date.valid_date?(2001,2,3) #=> true Date.valid_date?(2001,2,29) #=> false Date.valid_date?(2001,2,-1) #=> true
Returns true if the given week date is valid, and false if not.
Date.valid_commercial?(2001,5,6) #=> true Date.valid_commercial?(2001,5,8) #=> false
See also ::jd
and ::commercial
.
Returns a Time
object which denotes self. If self is a julian date, convert it to a gregorian date before converting it to Time
.
Returns self.