Class: Spider::OrderedHash
- Defined in:
- lib/spiderfw/utils/ordered_hash.rb
Overview
:nodoc:
Class Method Summary collapse
Instance Method Summary collapse
- #[]=(key, value) ⇒ Object
- #clear ⇒ Object
- #delete(key) ⇒ Object
- #delete_if ⇒ Object
- #each ⇒ Object (also: #each_pair)
- #each_key ⇒ Object
- #each_value ⇒ Object
-
#initialize(*args, &block) ⇒ OrderedHash
constructor
A new instance of OrderedHash.
- #initialize_copy(other) ⇒ Object
- #inspect ⇒ Object
- #keys ⇒ Object
- #merge(other_hash) ⇒ Object
- #merge!(other_hash) ⇒ Object
- #reject(&block) ⇒ Object
- #reject! ⇒ Object
-
#replace(other) ⇒ Object
When replacing with another hash, the initial order of our keys must come from the other hash -ordered or not.
- #shift ⇒ Object
- #to_a ⇒ Object
- #to_hash ⇒ Object
- #to_json ⇒ Object
- #values ⇒ Object
Constructor Details
#initialize(*args, &block) ⇒ OrderedHash
Returns a new instance of OrderedHash.
11 12 13 14 |
# File 'lib/spiderfw/utils/ordered_hash.rb', line 11 def initialize(*args, &block) super @keys = [] end |
Class Method Details
.[](*args) ⇒ Object
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 |
# File 'lib/spiderfw/utils/ordered_hash.rb', line 16 def self.[](*args) ordered_hash = new if args.length == 1 && (args.first.is_a?(Array) || args.first.is_a?(Hash)) args.first.each do |key_value_pair| next unless (key_value_pair.is_a?(Array)) ordered_hash[key_value_pair[0]] = key_value_pair[1] end return ordered_hash end unless (args.size % 2 == 0) raise ArgumentError.new("odd number of arguments for Hash") end args.each_with_index do |val, ind| next if (ind % 2 != 0) ordered_hash[val] = args[ind + 1] end ordered_hash end |
Instance Method Details
#[]=(key, value) ⇒ Object
46 47 48 49 |
# File 'lib/spiderfw/utils/ordered_hash.rb', line 46 def []=(key, value) @keys << key if !has_key?(key) super end |
#clear ⇒ Object
109 110 111 112 113 |
# File 'lib/spiderfw/utils/ordered_hash.rb', line 109 def clear super @keys.clear self end |
#delete(key) ⇒ Object
51 52 53 54 55 56 57 |
# File 'lib/spiderfw/utils/ordered_hash.rb', line 51 def delete(key) if has_key? key index = @keys.index(key) @keys.delete_at index end super end |
#delete_if ⇒ Object
59 60 61 62 63 |
# File 'lib/spiderfw/utils/ordered_hash.rb', line 59 def delete_if super sync_keys! self end |
#each ⇒ Object Also known as: each_pair
103 104 105 |
# File 'lib/spiderfw/utils/ordered_hash.rb', line 103 def each @keys.each {|key| yield [key, self[key]]} end |
#each_key ⇒ Object
95 96 97 |
# File 'lib/spiderfw/utils/ordered_hash.rb', line 95 def each_key @keys.each { |key| yield key } end |
#each_value ⇒ Object
99 100 101 |
# File 'lib/spiderfw/utils/ordered_hash.rb', line 99 def each_value @keys.each { |key| yield self[key]} end |
#initialize_copy(other) ⇒ Object
40 41 42 43 44 |
# File 'lib/spiderfw/utils/ordered_hash.rb', line 40 def initialize_copy(other) super # make a deep copy of keys @keys = other.keys end |
#inspect ⇒ Object
137 138 139 |
# File 'lib/spiderfw/utils/ordered_hash.rb', line 137 def inspect "#<OrderedHash #{super}>" end |
#keys ⇒ Object
75 76 77 |
# File 'lib/spiderfw/utils/ordered_hash.rb', line 75 def keys @keys.dup end |
#merge(other_hash) ⇒ Object
126 127 128 |
# File 'lib/spiderfw/utils/ordered_hash.rb', line 126 def merge(other_hash) dup.merge!(other_hash) end |
#merge!(other_hash) ⇒ Object
121 122 123 124 |
# File 'lib/spiderfw/utils/ordered_hash.rb', line 121 def merge!(other_hash) other_hash.each {|k,v| self[k] = v } self end |
#reject(&block) ⇒ Object
71 72 73 |
# File 'lib/spiderfw/utils/ordered_hash.rb', line 71 def reject(&block) dup.reject!(&block) end |
#reject! ⇒ Object
65 66 67 68 69 |
# File 'lib/spiderfw/utils/ordered_hash.rb', line 65 def reject! super sync_keys! self end |
#replace(other) ⇒ Object
When replacing with another hash, the initial order of our keys must come from the other hash -ordered or not.
131 132 133 134 135 |
# File 'lib/spiderfw/utils/ordered_hash.rb', line 131 def replace(other) super @keys = other.keys self end |
#shift ⇒ Object
115 116 117 118 119 |
# File 'lib/spiderfw/utils/ordered_hash.rb', line 115 def shift k = @keys.first v = delete(k) [k, v] end |
#to_a ⇒ Object
87 88 89 |
# File 'lib/spiderfw/utils/ordered_hash.rb', line 87 def to_a @keys.map { |key| [ key, self[key] ] } end |
#to_hash ⇒ Object
83 84 85 |
# File 'lib/spiderfw/utils/ordered_hash.rb', line 83 def to_hash self end |
#to_json ⇒ Object
91 92 93 |
# File 'lib/spiderfw/utils/ordered_hash.rb', line 91 def to_json '{'+ @keys.map{ |key| ({key => self[key]}).to_json[1..-2] }.join(', ') +'}' end |
#values ⇒ Object
79 80 81 |
# File 'lib/spiderfw/utils/ordered_hash.rb', line 79 def values @keys.collect { |key| self[key] } end |