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Lesson 8. Advanced string operations

After reading lesson 8, you’ll be able to

• Manipulate substrings
• Do mathematical operations with strings

If you’re given a long file, it’s typical to read the entire file as one large string. But working with such a large string can be cumbersome. One useful thing you might do is break it into smaller substrings—most often, by new lines, so that every paragraph or every data entry could be looked at separately. Another beneficial thing is to find multiple instances of the same word. You could decide that using the word very more than 10 times is annoying. Or if you’re reading the transcript of someone’s award acceptance speech, you may want to find all instances of the word like and remove those before posting ...