Compile a ArrayPatternNode
node
Dispatch enter and leave events for ArrayPatternNode
nodes and continue walking the tree.
in [foo, bar, baz]
Represents an array literal. This can be a regular array using brackets or a special array using % like %w or %i.
[1, 2, 3] ^^^^^^^^^
Represents an array pattern in pattern matching.
foo in 1, 2 ^^^^^^^^^^^ foo in [1, 2] ^^^^^^^^^^^^^ foo in *1 ^^^^^^^^^ foo in Bar[] ^^^^^^^^^^^^ foo in Bar[1, 2, 3] ^^^^^^^^^^^^^^^^^^^
Flags for array nodes.
This string is put at the end of a line that holds a JSON
array.
This string is put at the end of a line that holds a JSON
array.
The most standard error types are subclasses of StandardError
. A rescue clause without an explicit Exception
class will rescue all StandardErrors (and only those).
def foo raise "Oups" end foo rescue "Hello" #=> "Hello"
On the other hand:
require 'does/not/exist' rescue "Hi"
raises the exception:
LoadError: no such file to load -- does/not/exist
Raised when the arguments are wrong and there isn’t a more specific Exception
class.
Ex: passing the wrong number of arguments
[1, 2, 3].first(4, 5)
raises the exception:
ArgumentError: wrong number of arguments (given 2, expected 1)
Ex: passing an argument that is not acceptable:
[1, 2, 3].first(-4)
raises the exception:
ArgumentError: negative array size
Raised when a given numerical value is out of range.
[1, 2, 3].drop(1 << 100)
raises the exception:
RangeError: bignum too big to convert into `long'
The Comparable
mixin is used by classes whose objects may be ordered. The class must define the <=>
operator, which compares the receiver against another object, returning a value less than 0, returning 0, or returning a value greater than 0, depending on whether the receiver is less than, equal to, or greater than the other object. If the other object is not comparable then the <=>
operator should return nil
. Comparable
uses <=>
to implement the conventional comparison operators (<
, <=
, ==
, >=
, and >
) and the method between?
.
class StringSorter include Comparable attr :str def <=>(other) str.size <=> other.str.size end def initialize(str) @str = str end def inspect @str end end s1 = StringSorter.new("Z") s2 = StringSorter.new("YY") s3 = StringSorter.new("XXX") s4 = StringSorter.new("WWWW") s5 = StringSorter.new("VVVVV") s1 < s2 #=> true s4.between?(s1, s3) #=> false s4.between?(s3, s5) #=> true [ s3, s2, s5, s4, s1 ].sort #=> [Z, YY, XXX, WWWW, VVVVV]
Module Comparable provides these methods, all of which use method <=>
:
<
: Returns whether self
is less than the given object.
<=
: Returns whether self
is less than or equal to the given object.
==
: Returns whether self
is equal to the given object.
>
: Returns whether self
is greater than the given object.
>=
: Returns whether self
is greater than or equal to the given object.
between?
: Returns true
if self
is between two given objects.
clamp
: For given objects min
and max
, or range (min..max)
, returns:
min
if (self <=> min) < 0
.
max
if (self <=> max) > 0
.
self
otherwise.
Wrapper for arrays within a struct
An Array
wrapper that can be sent to another server via DRb
.
All entries in the array will be dumped or be references that point to the local server.
Represents the use of the forwarding parameter in a method, block, or lambda declaration.
def foo(...) ^^^ end
Cleared reference exception
This exception is raised if a parser error occurs.
This exception is raised if a generator or unparser error occurs.
Response class for Found
responses (status code 302).
The Found
response indicates that the client should look at (browse to) another URL.
References:
Response class for Temporary Redirect
responses (status code 307).
The request should be repeated with another URI
; however, future requests should still use the original URI
.
References:
Response class for Payload Too Large
responses (status code 413).
The request is larger than the server is willing or able to process.
References: