Snake Case to Camel Case

Python names are usually written in snake case (user_first_name), while JavaScript prefers camel case (userFirstName). Write snake_to_camel(name) that converts a snake case name to camel case.

The underscores split the name into pieces. The first piece stays as it is, every later piece gets a capital first letter, and the pieces are joined with no underscores. A piece that starts with a digit stays as it is.

Empty pieces, which come from underscores at the start or the end or from two underscores in a row, are skipped. A name with no pieces at all gives an empty string.

Examples

snake_to_camel("user_first_name")    # returns 'userFirstName'
snake_to_camel("total")              # returns 'total'
snake_to_camel("max_retry_count_3")  # returns 'maxRetryCount3'
snake_to_camel("_private_value")     # returns 'privateValue'

Note

name contains only lowercase letters, digits and underscores.