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hash_method_fix.rb
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hash_method_fix.rb
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class Optimism
#
# make some hash methods works for <#Optimism>
#
module HashMethodFix
# deep merge new data IN PLACE
#
# @params [Hash,Optimism] obj
# @return [self]
def _merge!(other)
other = Optimism.convert(other)
other._each { |k, v|
if Optimism === self[k] and Optimism === other[k]
self[k]._merge!(other[k])
else
self[k] = other[k]
end
}
self
end
alias << _merge!
# deep merge new data
#
# @params [Hash,Optimism] obj
# @return [Optimism] new <#Optimism>
def _merge other
target = dup
other = Optimism.convert(other)
other._each { |k, v|
if Optimism === target[k] and Optimism === other[k]
target[k]._merge(other[k])
else
target[k] = other[k]
end
}
target
end
# support path
#
# @example
#
# o = Optimism do
# _.a = 1
# _.b.c = 2
# end
#
# o._get("b.c") #=> 2
# o._get("c.d") #=> nil. path doesn't exist.
# o._get("a.b") #=> nil. path is wrong
#
# @param [String] key
# @return [Object] value
def _get(key)
value = self
key.split(".").each { |k|
return nil unless Optimism === value # wrong path
value = value[k]
return nil if value.nil? # path doesn't exist.
}
value
end
end
end