Class: BSON::OrderedHash
- Inherits:
-
Hash
- Object
- Hash
- BSON::OrderedHash
- Defined in:
- lib/bson/ordered_hash.rb
Instance Attribute Summary collapse
-
#ordered_keys ⇒ Object
Returns the value of attribute ordered_keys.
Class Method Summary collapse
Instance Method Summary collapse
- #==(other) ⇒ Object
- #[]=(key, value) ⇒ Object
- #clear ⇒ Object
- #delete(key, &block) ⇒ Object
- #delete_if(&block) ⇒ Object
- #each ⇒ Object (also: #each_pair)
- #eql?(o) ⇒ Boolean
- #hash ⇒ Object
-
#initialize(*a, &b) ⇒ OrderedHash
constructor
A new instance of OrderedHash.
- #inspect ⇒ Object
- #keys ⇒ Object
- #merge(other) ⇒ Object
- #merge!(other) ⇒ Object (also: #update)
- #to_a ⇒ Object
- #values ⇒ Object
Constructor Details
#initialize(*a, &b) ⇒ OrderedHash
Returns a new instance of OrderedHash.
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# File 'lib/bson/ordered_hash.rb', line 57 def initialize(*a, &b) super @ordered_keys = [] @ordered_set = Set.new end |
Instance Attribute Details
#ordered_keys ⇒ Object
Returns the value of attribute ordered_keys.
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# File 'lib/bson/ordered_hash.rb', line 40 def ordered_keys @ordered_keys end |
Class Method Details
.[](*args) ⇒ Object
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# File 'lib/bson/ordered_hash.rb', line 42 def self.[] *args oh = BSON::OrderedHash.new if Hash === args[0] oh.merge! args[0] elsif (args.size % 2) != 0 raise ArgumentError, "odd number of elements for Hash" else 0.step(args.size - 1, 2) do |key| value = key + 1 oh[args[key]] = args[value] end end oh end |
Instance Method Details
#==(other) ⇒ Object
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# File 'lib/bson/ordered_hash.rb', line 28 def ==(other) begin !other.nil? && keys == other.keys && values == other.values rescue false end end |
#[]=(key, value) ⇒ Object
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# File 'lib/bson/ordered_hash.rb', line 67 def []=(key, value) @ordered_keys ||= [] @ordered_set ||= Set.new unless @ordered_set.member?(key) @ordered_keys << key @ordered_set.add(key) end super(key, value) end |
#clear ⇒ Object
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# File 'lib/bson/ordered_hash.rb', line 129 def clear super @ordered_set.clear @ordered_keys = [] end |
#delete(key, &block) ⇒ Object
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# File 'lib/bson/ordered_hash.rb', line 115 def delete(key, &block) @ordered_keys.delete(key) if @ordered_keys @ordered_set.delete(key) if @ordered_set super end |
#delete_if(&block) ⇒ Object
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# File 'lib/bson/ordered_hash.rb', line 121 def delete_if(&block) self.each { |k,v| if yield k, v delete(k) end } end |
#each ⇒ Object Also known as: each_pair
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# File 'lib/bson/ordered_hash.rb', line 77 def each @ordered_keys ||= [] @ordered_keys.each { |k| yield k, self[k] } self end |
#eql?(o) ⇒ Boolean
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# File 'lib/bson/ordered_hash.rb', line 144 def eql?(o) if o.instance_of? BSON::OrderedHash self.hash == o.hash else false end end |
#hash ⇒ Object
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# File 'lib/bson/ordered_hash.rb', line 135 def hash code = 17 each_pair do |key, value| code = 37 * code + key.hash code = 37 * code + value.hash end code & 0x7fffffff end |
#inspect ⇒ Object
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# File 'lib/bson/ordered_hash.rb', line 109 def inspect str = '{' str << (@ordered_keys || []).collect { |k| "\"#{k}\"=>#{self.[](k).inspect}" }.join(", ") str << '}' end |
#keys ⇒ Object
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# File 'lib/bson/ordered_hash.rb', line 63 def keys @ordered_keys || [] end |
#merge(other) ⇒ Object
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# File 'lib/bson/ordered_hash.rb', line 93 def merge(other) oh = self.dup oh.merge!(other) oh end |
#merge!(other) ⇒ Object Also known as: update
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# File 'lib/bson/ordered_hash.rb', line 99 def merge!(other) @ordered_keys ||= [] @ordered_keys += other.keys # unordered if not an BSON::OrderedHash @ordered_keys.uniq! @ordered_set = Set.new(@ordered_keys) super(other) end |
#to_a ⇒ Object
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# File 'lib/bson/ordered_hash.rb', line 84 def to_a @ordered_keys ||= [] @ordered_keys.map { |k| [k, self[k]] } end |
#values ⇒ Object
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# File 'lib/bson/ordered_hash.rb', line 89 def values collect { |k, v| v } end |