delete « String « Ruby

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Ruby » String » delete

1.	With delete or delete!, you can delete characters from a string
2.	Get rid of that extra l in alll:
3.	use two ls instead of one for delete method
4.	negate all or part of an argument with the caret (^), similar to its use in regular expressions
5.	When there is more than one argument, take the intersection.

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