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Merge branch 'master' of github.com:hadley/r4ds

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hadley 2016-01-22 10:03:23 -06:00
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strings.Rmd
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@ -330,7 +330,7 @@ str_view(c("grey", "gray"), "gr(e|a)y")
### Repetition
The next step up in power involves control how many times a pattern matches:
The next step up in power involves control over how many times a pattern matches:
* `?`: 0 or 1
* `+`: 1 or more