hasanuzzaman sumon

Ruby behaviour

2015/10/10

In Ruby if you use symbolize key to keep data to hash you also have to use symbolize key to access and this is true for string.

    foo = {}
    foo[:key1] = 'symbolize key1'
    foo['key2'] = 'string key2'

    p foo[:key1] # symbolize key1
    p foo['key2'] # string key2

    p foo['key1'] # nil because there is no key named 'key1' ('key1' == :key1 return false)
    p foo[:key2] # nil because there is no key named :key2 ('key2' == :key2 return false)

    # but in rails we can access

But in rails we can use symbol and string alternatively for hash key because it use HashWithIndifferentAccess instead ruby hash where internally all key converted to string.

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