Typos & Grammar (#1684)

R6.Rmd

@@ -128,7 +128,7 @@ Side-effect R6 methods should always return `self` invisibly. This returns the "
 x$add(10)$add(10)$sum
 ```
 
-For, readability, you might put one method call on each line:
+For readability, you might put one method call on each line:
 
 ```{r}
 x$
@@ -145,7 +145,7 @@ This technique is called __method chaining__ and is commonly used in languages l
 
 There are two important methods that should be defined for most classes: `$initialize()` and `$print()`. They're not required, but providing them will make your class easier to use.
 
-`$initialize()` overrides the default behaviour of `$new()`. For example, the following code defines an Person class with fields `$name` and `$age`. To ensure that that `$name` is always a single string, and `$age` is always a single number, I placed checks in `$initialize()`.
+`$initialize()` overrides the default behaviour of `$new()`. For example, the following code defines a Person class with fields `$name` and `$age`. To ensure that `$name` is always a single string, and `$age` is always a single number, I placed checks in `$initialize()`.
 
 ```{r, error = TRUE}
 Person <- R6Class("Person", list(