Notice that we need to use as.numeric again in the last line to be sure thecontext the user enters is converted to a numeric value. With these three ingredients, we now have enough information to access, tokenize, and search for akeyword in a text file. The next thing to do is to take advantage of the functionthat we have already written for handling the tokenization: make_token_v.We will add a call to make_token_v to our function as follows:
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