Results for: "remove_const"

Performs a test on one or both of the filesystem entities at the given paths path0 and path1:

• Each path path0 or path1 points to a file, directory, device, pipe, etc.

• Character char selects a specific test.

The tests:

• Each of these tests operates only on the entity at path0, and returns true or false; for a non-existent entity, returns false (does not raise exception):

  Character	Test
  'b'	Whether the entity is a block device.
  'c'	Whether the entity is a character device.
  'd'	Whether the entity is a directory.
  'e'	Whether the entity is an existing entity.
  'f'	Whether the entity is an existing regular file.
  'g'	Whether the entity's setgid bit is set.
  'G'	Whether the entity's group ownership is equal to the caller's.
  'k'	Whether the entity's sticky bit is set.
  'l'	Whether the entity is a symbolic link.
  'o'	Whether the entity is owned by the caller's effective uid.
  'O'	Like 'o', but uses the real uid (not the effective uid).
  'p'	Whether the entity is a FIFO device (named pipe).
  'r'	Whether the entity is readable by the caller's effective uid/gid.
  'R'	Like 'r', but uses the real uid/gid (not the effective uid/gid).
  'S'	Whether the entity is a socket.
  'u'	Whether the entity's setuid bit is set.
  'w'	Whether the entity is writable by the caller's effective uid/gid.
  'W'	Like 'w', but uses the real uid/gid (not the effective uid/gid).
  'x'	Whether the entity is executable by the caller's effective uid/gid.
  'X'	Like 'x', but uses the real uid/gid (not the effective uid/git).
  'z'	Whether the entity exists and is of length zero.

• This test operates only on the entity at path0, and returns an integer size or nil:

  Character	Test
  's'	Returns positive integer size if the entity exists and has non-zero length, nil otherwise.

• Each of these tests operates only on the entity at path0, and returns a Time object; raises an exception if the entity does not exist:

  Character	Test
  'A'	Last access time for the entity.
  'C'	Last change time for the entity.
  'M'	Last modification time for the entity.

• Each of these tests operates on the modification time (mtime) of each of the entities at path0 and path1, and returns a true or false; returns false if either entity does not exist:

  Character	Test
  '<'	Whether the 'mtime` at `path0` is less than that at `path1`.
  '='	Whether the 'mtime` at `path0` is equal to that at `path1`.
  '>'	Whether the 'mtime` at `path0` is greater than that at `path1`.

• This test operates on the content of each of the entities at path0 and path1, and returns a true or false; returns false if either entity does not exist:

  Character	Test
  '-'	Whether the entities exist and are identical.

Produces a shallow copy of obj—the instance variables of obj are copied, but not the objects they reference. clone copies the frozen value state of obj, unless the :freeze keyword argument is given with a false or true value. See also the discussion under Object#dup.

class Klass
   attr_accessor :str
end
s1 = Klass.new      #=> #<Klass:0x401b3a38>
s1.str = "Hello"    #=> "Hello"
s2 = s1.clone       #=> #<Klass:0x401b3998 @str="Hello">
s2.str[1,4] = "i"   #=> "i"
s1.inspect          #=> "#<Klass:0x401b3a38 @str=\"Hi\">"
s2.inspect          #=> "#<Klass:0x401b3998 @str=\"Hi\">"

This method may have class-specific behavior. If so, that behavior will be documented under the #initialize_copy method of the class.

Returns a string converted from object.

Tries to convert object to a string using to_str first and to_s second:

String([0, 1, 2])        # => "[0, 1, 2]"
String(0..5)             # => "0..5"
String({foo: 0, bar: 1}) # => "{foo: 0, bar: 1}"

Raises TypeError if object cannot be converted to a string.

Returns x/y or arg as a Rational.

Rational(2, 3)   #=> (2/3)
Rational(5)      #=> (5/1)
Rational(0.5)    #=> (1/2)
Rational(0.3)    #=> (5404319552844595/18014398509481984)

Rational("2/3")  #=> (2/3)
Rational("0.3")  #=> (3/10)

Rational("10 cents")  #=> ArgumentError
Rational(nil)         #=> TypeError
Rational(1, nil)      #=> TypeError

Rational("10 cents", exception: false)  #=> nil

Syntax of the string form:

string form = extra spaces , rational , extra spaces ;
rational = [ sign ] , unsigned rational ;
unsigned rational = numerator | numerator , "/" , denominator ;
numerator = integer part | fractional part | integer part , fractional part ;
denominator = digits ;
integer part = digits ;
fractional part = "." , digits , [ ( "e" | "E" ) , [ sign ] , digits ] ;
sign = "-" | "+" ;
digits = digit , { digit | "_" , digit } ;
digit = "0" | "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9" ;
extra spaces = ? \s* ? ;

See also String#to_r.

Returns the count of elements, based on an argument or block criterion, if given.

With no argument and no block given, returns the number of elements:

[0, 1, 2].count                # => 3
{foo: 0, bar: 1, baz: 2}.count # => 3

With argument object given, returns the number of elements that are == to object:

[0, 1, 2, 1].count(1)           # => 2

With a block given, calls the block with each element and returns the number of elements for which the block returns a truthy value:

[0, 1, 2, 3].count {|element| element < 2}              # => 2
{foo: 0, bar: 1, baz: 2}.count {|key, value| value < 2} # => 2

Returns an array of objects returned by the block.

With a block given, calls the block with successive elements; returns an array of the objects returned by the block:

(0..4).map {|i| i*i }                               # => [0, 1, 4, 9, 16]
{foo: 0, bar: 1, baz: 2}.map {|key, value| value*2} # => [0, 2, 4]

With no block given, returns an Enumerator.

With a block given, returns an array of two arrays:

• The first having those elements for which the block returns a truthy value.

• The other having all other elements.

Examples:

p = (1..4).partition {|i| i.even? }
p # => [[2, 4], [1, 3]]
p = ('a'..'d').partition {|c| c < 'c' }
p # => [["a", "b"], ["c", "d"]]
h = {foo: 0, bar: 1, baz: 2, bat: 3}
p = h.partition {|key, value| key.start_with?('b') }
p # => [[[:bar, 1], [:baz, 2], [:bat, 3]], [[:foo, 0]]]
p = h.partition {|key, value| value < 2 }
p # => [[[:foo, 0], [:bar, 1]], [[:baz, 2], [:bat, 3]]]

With no block given, returns an Enumerator.

Related: Enumerable#group_by.

Returns the first element or elements.

With no argument, returns the first element, or nil if there is none:

(1..4).first                   # => 1
%w[a b c].first                # => "a"
{foo: 1, bar: 1, baz: 2}.first # => [:foo, 1]
[].first                       # => nil

With integer argument n, returns an array containing the first n elements that exist:

(1..4).first(2)                   # => [1, 2]
%w[a b c d].first(3)              # => ["a", "b", "c"]
%w[a b c d].first(50)             # => ["a", "b", "c", "d"]
{foo: 1, bar: 1, baz: 2}.first(2) # => [[:foo, 1], [:bar, 1]]
[].first(2)                       # => []

Returns whether exactly one element meets a given criterion.

With no argument and no block, returns whether exactly one element is truthy:

(1..1).one?           # => true
[1, nil, false].one?  # => true
(1..4).one?           # => false
{foo: 0}.one?         # => true
{foo: 0, bar: 1}.one? # => false
[].one?               # => false

With argument pattern and no block, returns whether for exactly one element element, pattern === element:

[nil, false, 0].one?(Integer)        # => true
[nil, false, 0].one?(Numeric)        # => true
[nil, false, 0].one?(Float)          # => false
%w[bar baz bat bam].one?(/m/)        # => true
%w[bar baz bat bam].one?(/foo/)      # => false
%w[bar baz bat bam].one?('ba')       # => false
{foo: 0, bar: 1, baz: 2}.one?(Array) # => false
{foo: 0}.one?(Array)                 # => true
[].one?(Integer)                     # => false

With a block given, returns whether the block returns a truthy value for exactly one element:

(1..4).one? {|element| element < 2 }                     # => true
(1..4).one? {|element| element < 1 }                     # => false
{foo: 0, bar: 1, baz: 2}.one? {|key, value| value < 1 }  # => true
{foo: 0, bar: 1, baz: 2}.one? {|key, value| value < 2 } # => false

Related: none?, all?, any?.

Returns whether no element meets a given criterion.

With no argument and no block, returns whether no element is truthy:

(1..4).none?           # => false
[nil, false].none?     # => true
{foo: 0}.none?         # => false
{foo: 0, bar: 1}.none? # => false
[].none?               # => true

With argument pattern and no block, returns whether for no element element, pattern === element:

[nil, false, 1.1].none?(Integer)      # => true
%w[bar baz bat bam].none?(/m/)        # => false
%w[bar baz bat bam].none?(/foo/)      # => true
%w[bar baz bat bam].none?('ba')       # => true
{foo: 0, bar: 1, baz: 2}.none?(Hash)  # => true
{foo: 0}.none?(Array)                 # => false
[].none?(Integer)                     # => true

With a block given, returns whether the block returns a truthy value for no element:

(1..4).none? {|element| element < 1 }                     # => true
(1..4).none? {|element| element < 2 }                     # => false
{foo: 0, bar: 1, baz: 2}.none? {|key, value| value < 0 }  # => true
{foo: 0, bar: 1, baz: 2}.none? {|key, value| value < 1 } # => false

Related: one?, all?, any?.

Returns an array of all non-nil elements:

a = [nil, 0, nil, 'a', false, nil, false, nil, 'a', nil, 0, nil]
a.compact # => [0, "a", false, false, "a", 0]

Enables the coverage measurement. See the documentation of Coverage class in detail. This is equivalent to Coverage.setup and Coverage.resume.

Returns the state of the coverage measurement.

Generates a hex-encoded version of a given string.

Returns system temporary directory; typically “/tmp”.

Returns a Digest subclass by name

require 'openssl'

OpenSSL::Digest("MD5")
# => OpenSSL::Digest::MD5

Digest("Foo")
# => NameError: wrong constant name Foo

Returns a Digest subclass by name

require 'openssl'

OpenSSL::Digest("MD5")
# => OpenSSL::Digest::MD5

Digest("Foo")
# => NameError: wrong constant name Foo

Return true if the named file exists.

file_name can be an IO object.

“file exists” means that stat() or fstat() system call is successful.

Returns true if the named file has the sticky bit set.

file_name can be an IO object.

Initiates garbage collection, even if manually disabled.

The full_mark keyword argument determines whether or not to perform a major garbage collection cycle. When set to true, a major garbage collection cycle is run, meaning all objects are marked. When set to false, a minor garbage collection cycle is run, meaning only young objects are marked.

The immediate_mark keyword argument determines whether or not to perform incremental marking. When set to true, marking is completed during the call to this method. When set to false, marking is performed in steps that are interleaved with future Ruby code execution, so marking might not be completed during this method call. Note that if full_mark is false, then marking will always be immediate, regardless of the value of immediate_mark.

The immediate_sweep keyword argument determines whether or not to defer sweeping (using lazy sweep). When set to false, sweeping is performed in steps that are interleaved with future Ruby code execution, so sweeping might not be completed during this method call. When set to true, sweeping is completed during the call to this method.

Note: These keyword arguments are implementation and version-dependent. They are not guaranteed to be future-compatible and may be ignored if the underlying implementation does not support them.

Returns the number of times GC has occurred since the process started.

Returns a Hash containing information about the GC.

The contents of the hash are implementation-specific and may change in the future without notice.

The hash includes internal statistics about GC such as:

count

The total number of garbage collections run since application start (count includes both minor and major garbage collections)

time

The total time spent in garbage collections (in milliseconds)

heap_allocated_pages

The total number of :heap_eden_pages + :heap_tomb_pages

heap_sorted_length

The number of pages that can fit into the buffer that holds references to all pages

heap_allocatable_pages

The total number of pages the application could allocate without additional GC

heap_available_slots

The total number of slots in all :heap_allocated_pages

heap_live_slots

The total number of slots which contain live objects

heap_free_slots

The total number of slots which do not contain live objects

heap_final_slots

The total number of slots with pending finalizers to be run

heap_marked_slots

The total number of objects marked in the last GC

heap_eden_pages

The total number of pages which contain at least one live slot

heap_tomb_pages

The total number of pages which do not contain any live slots

total_allocated_pages

The cumulative number of pages allocated since application start

total_freed_pages

The cumulative number of pages freed since application start

total_allocated_objects

The cumulative number of objects allocated since application start

total_freed_objects

The cumulative number of objects freed since application start

malloc_increase_bytes

Amount of memory allocated on the heap for objects. Decreased by any GC

malloc_increase_bytes_limit

When :malloc_increase_bytes crosses this limit, GC is triggered

minor_gc_count

The total number of minor garbage collections run since process start

major_gc_count

The total number of major garbage collections run since process start

compact_count

The total number of compactions run since process start

read_barrier_faults

The total number of times the read barrier was triggered during compaction

total_moved_objects

The total number of objects compaction has moved

remembered_wb_unprotected_objects

The total number of objects without write barriers

remembered_wb_unprotected_objects_limit

When :remembered_wb_unprotected_objects crosses this limit, major GC is triggered

old_objects

Number of live, old objects which have survived at least 3 garbage collections

old_objects_limit

When :old_objects crosses this limit, major GC is triggered

oldmalloc_increase_bytes

Amount of memory allocated on the heap for objects. Decreased by major GC

oldmalloc_increase_bytes_limit

When :oldmalloc_increase_bytes crosses this limit, major GC is triggered

If the optional argument, hash, is given, it is overwritten and returned. This is intended to avoid the probe effect.

This method is only expected to work on CRuby.

Get the default RubyGems API host. This is normally https://rubygems.org.

Set the default RubyGems API host.