Class: Hash

Inherits:
Object show all
Defined in:
lib/source/ruby.rb,
lib/source/redshift/request.rb

Overview

A Hash is a collection of key-value pairs. It is similar to an Array, except that indexing is done not by an integer index but by arbitrary keys of any object type.

Hashes have a default value that is returned when accessing keys that do not exist in the hash, which is nil unless otherwise assigned.

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(*args, &block) ⇒ Hash

call-seq:

Hash.new                      -> hash
Hash.new(obj)                 -> hash
Hash.new { |hash, key| block } -> hash

Returns a new, empty hash. If this hash is subsequently accessed with a key that doesn’t correspond to an existing hash entry, the value returned depends on the style of new used to create the hash. In the first form, the access returns nil. If obj is specified, this single object will be used for all default values. If a block is specified, it will be called with the hash object and the key, and should return the default value. It is the block’s responsibility to store the value in the hash if required.

h1 = Hash.new("No value for that key")

h1[:a] = 100      #=> 100
h1[:b] = 200      #=> 200
h1[:a]            #=> 100
h1[:c]            #=> "No value for that key"
# The following alters the single default object
h1[:c].upcase!    #=> "NO VALUE FOR THAT KEY"
h1[:d]            #=> "NO VALUE FOR THAT KEY"
# Values from defaults are not stored in the hash
h1.keys           #=> [:a, :b]

h2 = Hash.new { |hash, key| hash[key] = "No value at #{key}" }

h2[:c]            #=> "No value at c"
# A new object is created by the default block each time
h2[:c].upcase!    #=> "NO VALUE AT C"
h2[:d]            #=> "No value at d"
# Values from defaults are stored in the hash
h2.keys           #=> [:c, :d]



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# File 'lib/source/ruby.rb', line 3112

def initialize(*args,&block)
  `this.__default__=(args[0]==null?block==null?nil:block:args[0])`
  `this.__contents__={}`
end

Class Method Details

.[](*args) ⇒ Object

call-seq:

Hash[ [key (, | =>) value]* ] -> hash

Creates a new hash populated with the given objects. Equivalent to the literal {key, value, ...}. Keys and values occur in pairs, so there must be an even number of arguments.

Hash[:a, 100, 'b', 200]        #=> {:a => 100, "b" => 200}
Hash[:a => 100, 'b' => 200]    #=> {:a => 100, "b" => 200}
{:a => 100, 'b' => 200}        #=> {:a => 100, "b" => 200}



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# File 'lib/source/ruby.rb', line 3072

def self.[](*args)
  `if(args.length==1&&args[0].m$class()==c$Hash){return args[0];}`
  `for(var i=0,l=args.length,result=c$Hash.m$new(),c=result.__contents__;i<l;i+=2){var k=args[i],v=args[i+1],h=k.m$hash();c[h]=[k,v]}`
  return `result`
end

Instance Method Details

#==(other) ⇒ Object

call-seq:

hsh == other -> true or false

Equality – two hashes are equal if they contain the same number of keys and if for every key, hsh[key] == other[key].

h1 = {:a => 1, :b => 2}
h2 = {7 => 35, :b => 2, :a => 1}
h3 = {:a => 1, :b => 2, 7 => 35}
h4 = {:a => 1, :c => 2, :f => 35}

h1 == h2    #=> false
h2 == h3    #=> true
h3 == h4    #=> false



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# File 'lib/source/ruby.rb', line 3132

def ==(other)
  `var c=this.__contents__,o=other.__contents__`
  `for(var x in o){if(x.slice(1,2)=='_'&&c[x]==null){return false;};}`
  `for(var x in c){if(x.slice(1,2)=='_'&&!c[x][1].m$_eql2(o[x][1])){return false;};}`
  return true
end

#[](k) ⇒ Object

call-seq:

hsh[key] -> value

Element Reference – retrieves the value object corresponding to the key object. If not found, returns the default value (see Hash::new for details).

h = {:a => 100, :b => 200}

h[:a]   => 100
h[:c]   => nil



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# File 'lib/source/ruby.rb', line 3151

def [](k)
  `var kv=this.__contents__[k.m$hash()]`
  `if(!kv){var d=this.__default__;return(typeof(d)=='function'?d(this,kv[0]):d);}`
  return `kv[1]`
end

#[]=(k, v) ⇒ Object

call-seq:

hsh[key] = value     -> value
hsh.store(key,value) -> value

Element Assignment – associates the value given by value with the key given by key. The object key should not have its value changed while it is in use as a key.

h = {:a => 100, :b => 200}

h[:a] = 150   #=> 150
h[:c] = 300   #=> 300
h             #=> {:a => 150, :b => 200, :c => 300}



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# File 'lib/source/ruby.rb', line 3171

def []=(k,v)
  `this.__contents__[k.m$hash()]=[k,v]`
  return `v`
end

#clear ⇒ Object

call-seq:

hsh.clear -> hsh

Removes all key-value pairs from hsh.

h = {:a => 1, :b => 2}

h.clear   #=> {}
h         #=> {}



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# File 'lib/source/ruby.rb', line 3186

def clear
  `this.__contents__={}`
  return self
end

#default(key = nil) ⇒ Object

call-seq:

hsh.default(key = nil) -> obj

Returns the default value, the value that would be returned by hsh[key] if key did not exist in hsh. See also Hash::new and Hash#default=.

h = Hash.new                              #=> {}
h.default                                 #=> nil
h.default(2)                              #=> nil

h = Hash.new('FAIL')                      #=> {}
h.default                                 #=> 'FAIL'
h.default(2)                              #=> 'FAIL'

h = Hash.new {|h,k| h[k] = k.to_i * 10}   #=> {}
h.default                                 #=> 0
h.default(2)                              #=> 20



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# File 'lib/source/ruby.rb', line 3210

def default(key = nil)
  `var d=this.__default__`
  return `typeof(d)=='function'?d(this,key):d`
end

#default=(obj) ⇒ Object

call-seq:

hsh.default = obj -> hsh

Sets the default value, the value returned for a key that does not exist in the hash. It is not possible to set the a default to a Proc that will be executed on each key lookup.

h = {:a => 100, :b => 200}
h.default = 'Nothing'

h[:a]       #=> 100
h[:z]       #=> 'Nothing'

# This doesn't do what you might hope...
h.default = proc {|h,k| h[k] = k + k }

h[2]        #=> #<Proc:201>
h['foo']    #=> #<Proc:201>



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# File 'lib/source/ruby.rb', line 3234

def default=(obj)
  `this.__default__=obj`
  return self
end

#default_proc ⇒ Object

call-seq:

hsh.default_proc -> proc

If Hash::new was invoked with a block, return that block, otherwise return nil.

h = Hash.new {|h,k| h[k] = k*k }   #=> {}
p = h.default_proc                 #=> #<Proc:201>
a = []                             #=> []
p.call(a, 2)
a                                  #=> [nil, nil, 4]



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# File 'lib/source/ruby.rb', line 3251

def default_proc
  `var d=this.__default__`
  return `typeof(d)=='function'?c$Proc.m$new(d):nil`
end

#delete(k) ⇒ Object

call-seq:

hsh.delete(key)                 -> value
hsh.delete(key) { |key| block } -> value

Deletes and returns a key-value pair from hsh whose key is equal to key. If the key is not found, returns the default value, or if the optional code block is given, pass in the requested key and return the result of block.

h = {:a => 100, :b => 200}

h.delete(:a)                                    #=> 100
h.delete(:z)                                    #=> nil
h.delete(:z) {|k| "#{k.inspect} not found" }    #=> ":z not found"



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# File 'lib/source/ruby.rb', line 3271

def delete(k)
  `var c=this.__contents__,d=this.__default__,x=k.m$hash(),kv=c[x]`
  `if(kv!=null){var result=kv[1];delete(c[x]);return result;}`
  return `typeof(_block)=='function'?#{yield `k`}:(typeof(d)=='function'?d(this,k):d)`
end

#delete_if ⇒ Object

call-seq:

hsh.delete_if { |key, value| block } -> hsh

Deletes every key-value pair from hsh for which block evaluates to true, then returns hsh.

h = {:a => 100, :b => 200, :c => 300 }

h.delete_if {|k,v| v >= 200 }    #=> {:a => 100}



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# File 'lib/source/ruby.rb', line 3287

def delete_if
  `var c=this.__contents__`
  `for(var x in c){try{if(x.slice(1,2)=='_'&&$T(#{yield(`c[x][0]`,`c[x][1]`)})){delete(c[x]);};}catch(e){switch(e.__keyword__){case 'next':if($T(e.__return__)){delete(c[x]);};break;case 'break':return e.__return__;break;default:throw(e);};};}`
  return self
end

#each ⇒ Object

call-seq:

hsh.each { |key, value| block } -> hsh
hsh.each { |kv_array| block }   -> hsh

Calls block once for each key in hsh, passing the key and value to the block as a two-element array, or as separate key and value elements if the block has two formal parameters. See also Hash.each_pair, which will be marginally more efficient for blocks with two parameters.

h = {:a => 100, :b => 200}

h.each {|k,v| puts "key is #{k.inspect}, value is #{v.inspect}" }   #=> {:a => 100, :b => 200}
h.each {|kv|  puts "key-value array is #{kv.inspect}" }             #=> {:a => 100, :b => 200}

produces:

key is :a, value is 100
key is :b, value is 200
key-value array is [:a, 100]
key-value array is [:b, 100]



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# File 'lib/source/ruby.rb', line 3314

def each
  `var c=this.__contents__`
  `for(var x in c){try{if(x.slice(1,2)=='_'){var kv=c[x];_block.__arity__==1?#{yield(`[kv[0],kv[1]]`)}:#{yield(`kv[0],kv[1]`)}};}catch(e){switch(e.__keyword__){case 'next':;break;case 'break':return e.__return__;break;default:throw(e);};};}`
  return self
end

#each_key ⇒ Object

call-seq:

hsh.each_key { |key| block } -> hsh

Calls block once for each key in hsh, passing the key as a parameter.

h = {:a => 100, :b => 200}

h.each_key {|k| puts k.inspect }    #=> {:a => 100, :b => 200}

produces:

:a
:b



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# File 'lib/source/ruby.rb', line 3334

def each_key
  `var c=this.__contents__`
  `for(var x in c){try{if(x.slice(1,2)=='_'){#{yield `c[x][0]`}};}catch(e){switch(e.__keyword__){case 'next':;break;case 'break':return e.__return__;break;default:throw(e);};};}`
  return self
end

#each_pair ⇒ Object

call-seq:

hsh.each_key { |key| block } -> hsh

Calls block once for each key in hsh, passing the key and value as parameters.

h = {:a => 100, :b => 200}

h.each_pair {|k,v| puts "#{k.inspect} is #{v.inspect}" }    #=> {:a => 100, :b => 200}

produces:

:a is 100
:b is 200



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# File 'lib/source/ruby.rb', line 3355

def each_pair
  `var c=this.__contents__`
  `for(var x in c){try{if(x.slice(1,2)=='_'){var kv=c[x];#{yield(`kv[0]`,`kv[1]`)}};}catch(e){switch(e.__keyword__){case 'next':;break;case 'break':return e.__return__;break;default:throw(e);};};}`
  return self
end

#each_value ⇒ Object

call-seq:

hsh.each_key { |key| block } -> hsh

Calls block once for each key in hsh, passing the value as a parameter.

h = {:a => 100, :b => 200}

h.each_value {|v| puts v.inspect }    #=> {:a => 100, :b => 200}

produces:

100
200



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# File 'lib/source/ruby.rb', line 3376

def each_value
  `var c=this.__contents__`
  `for(var x in c){try{if(x.slice(1,2)=='_'){#{yield `c[x][1]`}};}catch(e){switch(e.__keyword__){case 'next':;break;case 'break':return e.__return__;break;default:throw(e);};};}`
  return self
end

#empty? ⇒ Boolean

call-seq:

hsh.empty? -> true or false

Returns true if hsh contains no key-value pairs.

{}.empty?   #=> true

Returns:

  • (Boolean) 


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# File 'lib/source/ruby.rb', line 3389

def empty?
  `for(var x in this.__contents__){if(x.slice(1,2)=='_'){return false;};}`
  return true
end

#fetch(key, &block) ⇒ Object

call-seq:

hsh.fetch(key [, default])     -> obj
hsh.fetch(key) { |key| block } -> obj

Returns a value from hsh for the given key. If the key is not found, returns the default object or evaluates block, or raises IndexError if neither are given.

h = {:a => 100, :b => 200}

h.fetch(:a)                                     #=> 100
h.fetch(:z, 'No value')                         #=> "No value"
h.fetch(:z) { |k| "No value at #{k.inspect}"}   #=> "No value at :z"



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# File 'lib/source/ruby.rb', line 3408

def fetch(key, &block)
  `var c=this.__contents__,k=key.m$hash(),kv=c[k]`
  `if(kv!=null){return kv[1];}`
  return `typeof(block)=='function'?block(key):block`
end

#has_key?(k) ⇒ Boolean

call-seq:

hsh.has_key?(key) -> true or false
hsh.include?(key) -> true or false
hsh.key?(key)     -> true or false
hsh.member?(key)  -> true or false

Returns true if the given key is present in hsh.

h = {:a => 100, :b => 200}

h.has_key?(:a)    #=> true
h.has_key?(:z)    #=> false

Returns:

  • (Boolean) 


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# File 'lib/source/ruby.rb', line 3427

def has_key?(k)
  `!!this.__contents__[k.m$hash()]`
end

#has_value?(value) ⇒ Boolean

call-seq:

hsh.has_value?(value) -> true or false
hsh.value?(value)     -> true or false

Returns true if there is any key in hsh such that hsh[key] == value.

h = {:a => 100, :b => 200}

h.has_value?(100)   #=> true
h.has_value?(999)   #=> false

Returns:

  • (Boolean) 


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# File 'lib/source/ruby.rb', line 3443

def has_value?(value)
  `var c=this.__contents__`
  `for(var x in c){if(x.slice(1,2)=='_'&&c[x][1].m$_eql2(value)){return true;};}`
  return false
end

#hash ⇒ Object

:nodoc:



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# File 'lib/source/ruby.rb', line 3449

def hash # :nodoc:
end

#include?(k) ⇒ Boolean

call-seq:

hsh.has_key?(key) -> true or false
hsh.include?(key) -> true or false
hsh.key?(key)     -> true or false
hsh.member?(key)  -> true or false

Returns true if the given key is present in hsh.

h = {:a => 100, :b => 200}

h.include?(:a)    #=> true
h.include?(:z)    #=> false

Returns:

  • (Boolean) 


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# File 'lib/source/ruby.rb', line 3465

def include?(k)
  `!!this.__contents__[k.m$hash()]`
end

#index(value) ⇒ Object

call-seq:

hsh.index(value) -> key or nil

Returns the key for a given value. If not found, returns nil.

h = {:a => 100, :b => 200}

h.index(100)    #=> :a
h.index(999)    #=> nil



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# File 'lib/source/ruby.rb', line 3479

def index(value)
  `var c=this.__contents__`
  `for(var x in c){var kv=c[x];if(x.slice(1,2)=='_'&&kv[1].m$_eql2(value)){return kv[0];};}`
  return nil
end

#inspect ⇒ Object

call-seq:

hsh.inspect -> string

Return the contents of hsh as a string.

h = Hash[:a,100,:b,200]

h.inspect   #=> "{:a => 100, :b => 200}"



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# File 'lib/source/ruby.rb', line 3494

def inspect
  `var contents=[],c=this.__contents__`
  `for(var x in c){if(x.slice(1,2)=='_'){var kv=c[x];contents.push(kv[0].m$inspect().__value__+' => '+kv[1].m$inspect().__value__);};}`
  return `$q('{'+contents.join(', ')+'}')`
end

#invert ⇒ Object

call-seq:

hsh.invert -> hash

Returns a new hash created by using hsh’s values as keys, and its keys as values.

h = {:n => 100, :m => 100, :y => 300, :d => 200, :a => 0 }

h.invert    #=> {100 => :m, 300 => :y, 200 => :d, 0 => :a}



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# File 'lib/source/ruby.rb', line 3510

def invert
  `var c=this.__contents__,result=c$Hash.m$new()`
  `for(var x in c){if(x.slice(1,2)=='_'){var ckv=c[x],rkv=result.__contents__[ckv[1].m$hash()]=[];rkv[0]=ckv[1];rkv[1]=ckv[0]};}`
  return `result`
end

#key?(k) ⇒ Boolean

call-seq:

hsh.has_key?(key) -> true or false
hsh.include?(key) -> true or false
hsh.key?(key)     -> true or false
hsh.member?(key)  -> true or false

Returns true if the given key is present in hsh.

h = {:a => 100, :b => 200}

h.key?(:a)    #=> true
h.key?(:z)    #=> false

Returns:

  • (Boolean) 


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# File 'lib/source/ruby.rb', line 3529

def key?(k)
  `!!this.__contents__[k.m$hash()]`
end

#keys ⇒ Object

call-seq:

hsh.keys -> array

Returns a new array populated with the keys in hsh. See also Hash#values.

h = {:a => 100, :b => 200}

h.keys    #=> [:a, :b]



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# File 'lib/source/ruby.rb', line 3543

def keys
  `var c=this.__contents__,result=[]`
  `for(var x in c){if(x.slice(1,2)=='_'){result.push(c[x][0]);};}`
  return `result`
end

#length ⇒ Object

call-seq:

hsh.length -> integer
hsh.size   -> integer

Returns the number of key-value pairs in hsh.

h = {:a => 100, :b => 200}

h.length    #=> 2
h.clear     #=> {}
h.length    #=> 0



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# File 'lib/source/ruby.rb', line 3561

def length
  `var c=this.__contents__,result=0`
  `for(var x in c){if(x.slice(1,2)=='_'){result++;};}`
  return `result`
end

#member?(k) ⇒ Boolean

call-seq:

hsh.has_key?(key) -> true or false
hsh.include?(key) -> true or false
hsh.key?(key)     -> true or false
hsh.member?(key)  -> true or false

Returns true if the given key is present in hsh.

h = {:a => 100, :b => 200}

h.member?(:a)   #=> true
h.member?(:z)   #=> false

Returns:

  • (Boolean) 


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# File 'lib/source/ruby.rb', line 3580

def member?(k)
  `!!this.__contents__[k.m$hash()]`
end

#merge(other) ⇒ Object

call-seq:

hsh.merge(other)                                       -> hash
hsh.merge(other) { |key, old_value, new_value| block } -> hash

Returns a new hash containing the contents of other and the contents of hsh, using the value from other in the case of duplicate keys.

h1 = {:a => 100, :b => 200}
h2 = {:a => 150, :c => 300}

h1.merge(h2)                                #=> {:a => 150, :b => 200, :c => 300}
h1.merge(h2) {|k,oldv,newv| oldv * newv }   #=> {:a => 15000, :b => 200, :c => 300}
h1                                          #=> {:a => 100, :b => 200}

FIX: Doesn’t handle loop control keywords



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# File 'lib/source/ruby.rb', line 3599

def merge(other)
  `var c=this.__contents__,o=other.__contents__,result=c$Hash.m$new(),r=result.__contents__`
  `for(var x in c){if(x.slice(1,2)=='_'){r[x]=c[x];};}`
  `for(var x in o){var ckv=c[x],okv=o[x];if(x.slice(1,2)=='_'){typeof(_block)=='function'&&ckv!=null?r[x]=[ckv[0],#{yield(`ckv[0]`,`ckv[1]`,`okv[1]`)}]:r[x]=okv;};}`
  return `result`
end

#merge!(other) ⇒ Object

call-seq:

hsh.merge!(other)                                       -> hash
hsh.merge!(other) { |key, old_value, new_value| block } -> hash
hsh.update(other)                                       -> hash
hsh.update(other) { |key, old_value, new_value| block } -> hash

Returns hsh with the contents of other added to it, overwriting duplicate entries in hsh with those from other.

h1 = {:a => 100, :b => 200}
h2 = {:a => 150, :c => 300}

h1.merge!(h2)                                 #=> {:a => 150, :b => 200, :c => 300}
h1.merge!(h2) {|k,oldv,newv| oldv * newv }    #=> {:a => 22500, :b => 200, :c => 90000}
h1                                            #=> {:a => 22500, :b => 200, :c => 90000}

FIX: Doesn’t handle loop control keywords



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# File 'lib/source/ruby.rb', line 3623

def merge!(other)
  `var c=this.__contents__,o=other.__contents__`
  `for(var x in o){var ckv=c[x],okv=o[x];if(x.slice(1,2)=='_'){typeof(_block)=='function'&&ckv!=null?ckv[1]=#{yield(`ckv[0]`,`ckv[1]`,`okv[1]`)}:c[x]=okv;};}`
  return self
end

#reject ⇒ Object

call-seq:

hsh.reject { |key, value| block } -> hash

Returns a new hash consisting of the key-value pairs for which block evaluates to nil or false.

h = {:a => 100, :b => 200, :c => 300}

h.reject {|k,v| v > 100 }   #=> {:a => 100}
h.reject {|k,v| v < 200 }   #=> {:b => 200, :c => 300}
h                           #=> {:a => 100, :b => 200, :c => 300}



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# File 'lib/source/ruby.rb', line 3641

def reject
  `var c=this.__contents__,result=c$Hash.m$new()`
  `for(var x in c){try{var kv=c[x];if(x.slice(1,2)=='_'&&!$T(#{yield(`kv[0]`,`kv[1]`)})){result.__contents__[x]=kv;};}catch(e){switch(e.__keyword__){case 'next':if(!$T(e.__return__)){result.__contents__[x]=kv;};break;case 'break':return e.__return__;break;default:throw(e);};};}`
  return `result`
end

#reject! ⇒ Object

call-seq:

hsh.reject! { |key, value| block } -> hsh or nil

Removes key-value pairs for which block evaluates to nil or false and returns hsh, or nil if no changes were made.

h = {:a => 100, :b => 200, :c => 300}

h.reject! {|k,v| v > 100 }    #=> {:a => 100}
h.reject! {|k,v| v > 100 }    #=> nil
h                             #=> {:a => 100}



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# File 'lib/source/ruby.rb', line 3660

def reject!
  `var c=this.__contents__,u=true`
  `for(var x in c){try{var kv=c[x];if(x.slice(1,2)=='_'&&$T(#{yield(`kv[0]`,`kv[1]`)})){u=false;delete(c[x]);};}catch(e){switch(e.__keyword__){case 'next':if($T(e.__return__)){u=false;delete(c[x]);};break;case 'break':return e.__return__;break;default:throw(e);};};}`
  return `u?nil:this`
end

#replace(other) ⇒ Object

call-seq:

hsh.replace(other) -> hsh

Replaces the contents of hsh with the contents of other.

h = {:a => 100, :b => 200}

h.replace(:c => 300, :d => 400)   #=> {:c => 300, :d => 400}
h                                 #=> {:c => 300, :d => 400}



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# File 'lib/source/ruby.rb', line 3676

def replace(other)
  `this.__contents__={}`
  `var c=this.__contents__,o=other.__contents__`
  `for(var x in o){if(x.slice(1,2)=='_'){c[x]=o[x];};}`
  return self
end

#select ⇒ Object

call-seq:

hsh.select { |key, value| block } -> array

Returns an array consisting of [key,value] pairs for which the block returns true. Also see Hash.values_at.

h = {:a => 100, :b => 200, :c => 300}

h.select {|k,v| v > 100 }   #=> [[:b, 200], [:c, 300]]
h.select {|k,v| v < 200}    #=> [[:a, 100]]



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# File 'lib/source/ruby.rb', line 3694

def select
  `var c=this.__contents__,result=[]`
  `for(var x in c){try{var kv=c[x];if(x.slice(1,2)=='_'&&$T(#{yield(`kv[0]`,`kv[1]`)})){result.push(kv);};}catch(e){switch(e.__keyword__){case 'next':if($T(e.__return__)){result.push(kv);};break;case 'break':return e.__return__;break;default:throw(e);};};}`
  return `result`
end

#shift ⇒ Object

call-seq:

hsh.shift -> array or object

Removes a key-value pair from hsh and returns it as the two-item array [key, value], or returns the default value if hsh is empty.

h = {:a => 100, :b => 200}

h.shift   #=> [:a, 100]
h.shift   #=> [:b, 200]
h.shift   #=> nil
h         #=> {}



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# File 'lib/source/ruby.rb', line 3713

def shift
  `var c=this.__contents__,d=this.__default__,result=typeof(d)=='function'?d(nil):d`
  `for(var x in c){if(x.slice(1,2)=='_'){result=[c[x][0],c[x][1]];delete(c[x]);break;};}`
  return `result`
end

#size ⇒ Object

call-seq:

hsh.length -> integer
hsh.size   -> integer

Returns the number of key-value pairs in hsh.

h = {:a => 100, :b => 200}

h.size    #=> 2
h.clear   #=> {}
h.size    #=> 0



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# File 'lib/source/ruby.rb', line 3731

def size
  `var c=this.__contents__,result=0`
  `for(var x in c){if(x.slice(1,2)=='_'){result++;};}`
  return `result`
end

#sort(&block) ⇒ Object

call-seq:

hsh.sort                 -> array
hsh.sort { |a,b| block } -> array

Converts hsh to a nested array of [key, value] arrays and sorts it, using Array#sort.

h = {3 => 'a', 1 => 'b', 2 => 'c'}

h.sort                          #=> [[1, "b"], [2, "c"], [3, "a"]]
h.sort {|a,b| a[1] <=> b[1] }   #=> [[3, "a"], [1, "b"], [2, "c"]]

FIX: Doesn’t handle loop control keywords



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# File 'lib/source/ruby.rb', line 3750

def sort(&block)
  `var c=this.__contents__,result=[]`
  `for(var x in c){if(x.slice(1,2)=='_'){result.push(c[x]);};}`
  return `c$Array.prototype._quick_sort.call(result,0,result.length,block)`
end

#store(k, v) ⇒ Object

call-seq:

hsh[key] = value     -> value
hsh.store(key,value) -> value

Element Assignment – associates the value given by value with the key given by key. The object key should not have its value changed while it is in use as a key.

h = {:a => 100, :b => 200}

h.store(:a,150)   #=> 150
h.store(:c,300)   #=> 300
h                 #=> {:a => 150, :b => 200, :c => 300}



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# File 'lib/source/ruby.rb', line 3770

def store(k,v)
  `this.__contents__[k.m$hash()]=[k,v]`
  return `v`
end

#to_a ⇒ Object

call-seq:

hsh.to_a -> array

Converts hash to a nested array of [key, value] arrays.

h = {:a => 100, :b => 200}

h.to_a    #=> [[:a, 100], [:b, 200]]



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# File 'lib/source/ruby.rb', line 3784

def to_a
  `var c=this.__contents__,result=[]`
  `for(var x in c){if(x.slice(1,2)=='_'){result.push(c[x]);};}`
  return `result`
end

#to_hash ⇒ Object

call-seq:

hsh.to_hash -> hsh

Returns hsh.



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# File 'lib/source/ruby.rb', line 3795

def to_hash
  self
end

#to_query_string(base = '') ⇒ Object

call-seq:

hsh.to_query_string -> string

Returns a string representing hsh formatted as HTTP data.



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# File 'lib/source/redshift/request.rb', line 245

def to_query_string(base = '')
  query_string = []
  self.each do |k,v|
    next if v.nil?
    k = base.empty? ? k.to_s : "%s[%s]" % [base,k]
    case v
    when Hash
      result = v.to_query_string(k)
    when Array
      qs = {}
      `for(var i=0,l=v.length;i<l;i++){#{qs[i] = v[i]}}`
      #v.each_with_index do |v,i|
      #  qs[i] = v
      #end
      result = qs.to_query_string(k)
    else
      result = "%s=%s" % [k, `$q(encodeURIComponent(v))`]
    end
    query_string.push(result)
  end
  return query_string.join('&')
end

#to_s ⇒ Object

call-seq:

hsh.to_s -> string

Converts hsh to a string by converting the hash to an array of [key, value] pairs and then converting that array to a string using Array#join with the default separator.



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# File 'lib/source/ruby.rb', line 3806

def to_s
  `var c=this.__contents__,result=[]`
  `for(var x in c){if(x.slice(1,2)=='_'){result.push(c[x]);};}`
  return `c$Array.prototype.m$join.call(result)`
end

#update(other) ⇒ Object

call-seq:

hsh.merge!(other)                                       -> hash
hsh.merge!(other) { |key, old_value, new_value| block } -> hash
hsh.update(other)                                       -> hash
hsh.update(other) { |key, old_value, new_value| block } -> hash

Returns hsh with the contents of other added to it, overwriting duplicate entries in hsh with those from other.

h1 = {:a => 100, :b => 200}
h2 = {:a => 150, :c => 300}

h1.update(h2)                                 #=> {:a => 150, :b => 200, :c => 300}
h1.update(h2) {|k,oldv,newv| oldv * newv }    #=> {:a => 22500, :b => 200, :c => 90000}
h1                                            #=> {:a => 22500, :b => 200, :c => 90000}

FIX: Doesn’t handle loop control keywords



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# File 'lib/source/ruby.rb', line 3829

def update(other)
  `var c=this.__contents__,o=other.__contents__`
  `for(var x in o){var ckv=c[x],okv=o[x];if(x.slice(1,2)=='_'){typeof(_block)=='function'&&ckv!=null?ckv[1]=#{yield(`ckv[0]`,`ckv[1]`,`okv[1]`)}:c[x]=okv;};}`
  return self
end

#value?(value) ⇒ Boolean

call-seq:

hsh.has_value?(value) -> true or false
hsh.value?(value)     -> true or false

Returns true if there is any key in hsh such that hsh[key] == value.

h = {:a => 100, :b => 200}

h.value?(100)   #=> true
h.value?(999)   #=> false

Returns:

  • (Boolean) 


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# File 'lib/source/ruby.rb', line 3847

def value?(value)
  `var c=this.__contents__`
  `for(var x in this.__contents__){if(x.slice(1,2)=='_'&&c[x][1].m$_eql2(value)){return true;};}`
  return false
end

#values ⇒ Object

call-seq:

hsh.values -> array

Returns a new array populated with the values of hsh. See also Hash#keys.

h = {:a => 100, :b => 200}

h.values    #=> [100, 200]



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# File 'lib/source/ruby.rb', line 3863

def values
  `var c=this.__contents__,result=[]`
  `for(var x in c){if(x.slice(1,2)=='_'){result.push(c[x][1]);};}`
  return `result`
end

#values_at(*args) ⇒ Object

call-seq:

hsh.values_at(key, ...) -> array

Returns an array containing the values associated with the given keys. See also Hash.select.

h = {:a => 100, :b => 200, :c => 300}

h.values_at(:a,:c)    #=> [100,300]



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# File 'lib/source/ruby.rb', line 3879

def values_at(*args)
  `for(var i=0,l=args.length,c=this.__contents__,d=this.__default__,result=[];i<l;++i){var h=args[i].m$hash(),kv=c[h];result.push(kv?kv[1]:(typeof(d)=='function'?d(this,args[i]):d))}`
  return `result`
end