Own method has_key for class Hash. -howto

Ruby
1

Dear all,

Can you help me how can I implement my own “has_key” method for “hash
class.”

class Hash

def my_each_key(&block)
self.each { |key|
yield(key[0])
}
end

def my_each_value(&block)
self.each { |value|
yield(value[1])
}
end

def has_key()
#todo
end

end

h = {1 => 1.0, 2 => 2.0, 3 => 3.0 }

many thanks in advance,

salai.

2

I was able able solve the problem …

def has_key(k)
self.each { |k|
k = k[0]
}
return k
end

is there any other better/easier solution?

regards,

salai.

3

At 2009-07-08 12:33PM, “salai” wrote:

Dear all,

Can you help me how can I implement my own “has_key” method for “hash class.”

class Hash
def my_each_key(&block)
[…]
def my_each_value(&block)
[…]
def my_has_key?(key)

      keys.include?(key)
4

thank you!.