def romanToInt(self, s: str) -> int
This is function name and this format is used in python. I am confused why we are using this arrow and why we are using int inside paranthesis after s. Can someone explain please?
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juanpa.arrivillaga
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user13157507
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2See https://stackoverflow.com/q/51639332/3001761. Note that "this" is a pretty terrible description for a title. – jonrsharpe Mar 30 '20 at 20:38
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https://stackoverflow.com/a/21384492/635608 – Mat Mar 30 '20 at 20:39
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In the future, please use the generic [python] tag for all python related questions. Use a version-specific tag at your discretion – juanpa.arrivillaga Mar 30 '20 at 20:45
1 Answers
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They are function annotations.
-> marks the return function annotation indicating the function returns an int.
The : str indicates a string argument.
You can read more about them here.
jonrsharpe
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Sanil
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5Questions that you know to be duplicative should be closed, not answered. See the "Answer Well-Asked Questions" section of [How to Answer](https://stackoverflow.com/help/how-to-answer), including the bullet point regarding questions that "have already been asked and answered many times before". – Charles Duffy Mar 30 '20 at 20:40