class Friend
attr_accessor :name, :age, :phone
def initialize(name, age, phone)
@name, @age, @phone = name, age, phone
end
end
f1 = Friend.new("John", 30, "555-1212")
p f1.instance
f1.instance.update({:name=>'Jerry'})
p f1.instance
<<(pair)
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91: def <<(pair)
92: name, value = *pair
93: name = atize(name)
94: @delegate.instance_variable_set(name, value)
95: end
[](name)
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79: def [](name)
80: name = atize(name)
81: @delegate.instance_variable_get(name)
82: end
[]=(name, value)
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85: def []=(name, value)
86: name = atize(name)
87: @delegate.instance_variable_set(name,value)
88: end
assign(hash)
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A hold-over from the the old # method.
each()
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43: def each
44: @delegate.instance_variables.each do |name|
45: yield(name[1..1].to_sym, @delegate.instance_variable_get(name))
46: end
47: end
eval(*a,&b)
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Instance evaluation.
145: def eval(*a,&b)
146: @delegate.instance_eval(*a,&b)
147: end
instance_delegate()
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38: def instance_delegate
39: @delegate
40: end
keys()
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Instance vairable names as symbols.
124: def keys
125: @delegate.instance_variables.collect do |name|
126: name[1..1].to_sym
127: end
128: end
names()
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Instance variable names as strings.
131: def names
132: @delegate.instance_variables.collect do |name|
133: name[1..1]
134: end
135: end
to_h(at=false)
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Return instance variables with values as a hash.
class X
def initialize(a,b)
@a, @b = a, b
end
end
x = X.new(1,2)
x.instance.to_h #=> { :a=>1, :b=>2 }
61: def to_h(at=false)
62: h = {}
63: if at
64: @delegate.instance_variables.each do |name|
65: h[name] = @delegate.instance_variable_get(name)
66: end
67: else
68: each do |key, value|
69: h[key] = value
70: end
71: end
72: h
73: end
to_hash(at=false)
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TODO: Not sure if this should be used.
update(hash)
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Set instance variables given a hash.
instance.update('@a'=>1, '@b'=>2)
@a #=> 1
@b #=> 2
Also, +@+ sign is not neccessary.
instance.update(:a=>1, :b=>2)
@a #=> 1
@b #=> 2
109: def update(hash)
110: hash.each do |pair|
111: self << pair
112: end
113: end
values()
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Instance variable values.
138: def values
139: @delegate.instance_variables.collect do |name|
140: @delegate.instance_variable_get(name)
141: end
142: end
variables()
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Same as #.
119: def variables
120: @delegate.instance_variables
121: end
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