Fix typo, closes #1545
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@ -804,7 +804,7 @@ But in general, whenever you create patterns from existing strings it's wise to
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3. `colors()` contains a number of modifiers like "lightgray" and "darkblue".
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3. `colors()` contains a number of modifiers like "lightgray" and "darkblue".
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How could you automatically identify these modifiers?
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How could you automatically identify these modifiers?
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(Think about how you might detect and then removed the colors that are modified).
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(Think about how you might detect and then remove the colors that are modified).
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4. Create a regular expression that finds any base R dataset.
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4. Create a regular expression that finds any base R dataset.
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You can get a list of these datasets via a special use of the `data()` function: `data(package = "datasets")$results[, "Item"]`.
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You can get a list of these datasets via a special use of the `data()` function: `data(package = "datasets")$results[, "Item"]`.
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