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fix typos in transform (#294)

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Thomas Klebel 2016-08-21 00:24:27 +02:00 committed by Hadley Wickham
parent d150dce730
commit 1913474b52
1 changed files with 2 additions and 2 deletions
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transform.Rmd
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@ -93,14 +93,14 @@ sqrt(2) ^ 2 == 2
1/49 * 49 == 1 1/49 * 49 == 1
``` ```
Computers use finite precision arithmetic (they obviously can't store an infinite number of digits!) so remember that every number you see is an approximation. Instead of relying on `==`, use use `dplyr::near()`: Computers use finite precision arithmetic (they obviously can't store an infinite number of digits!) so remember that every number you see is an approximation. Instead of relying on `==`, use `dplyr::near()`:
```{r} ```{r}
near(sqrt(2) ^ 2, 2) near(sqrt(2) ^ 2, 2)
near(1 / 49 * 49, 1) near(1 / 49 * 49, 1)
``` ```
(Remember that we use `::` to explicit about where a function lives. If dplyr is installed, `dplyr::near()` will always work. If you want to use the shorter `near()`, you need to make sure you have loaded dplyr with `library(dplyr)`.) (Remember that we use `::` to be explicit about where a function lives. If dplyr is installed, `dplyr::near()` will always work. If you want to use the shorter `near()`, you need to make sure you have loaded dplyr with `library(dplyr)`.)
### Logical operators ### Logical operators