From 323a84bd45b036c4b00f1a7c7995f8f0465dfbf8 Mon Sep 17 00:00:00 2001
From: Zhuoer Dong <dongzhuoer@mail.nankai.edu.cn>
Date: Mon, 19 Nov 2018 21:35:12 +0800
Subject: [PATCH] typo in iteration.Rmd (#730)

---
 iteration.Rmd | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/iteration.Rmd b/iteration.Rmd
index 7561624..018f368 100644
--- a/iteration.Rmd
+++ b/iteration.Rmd
@@ -953,10 +953,10 @@ x %>% accumulate(`+`)
 1.  Implement your own version of `every()` using a for loop. Compare it with
     `purrr::every()`. What does purrr's version do that your version doesn't?
 
-1.  Create an enhanced `col_sum()` that applies a summary function to every
+1.  Create an enhanced `col_summary()` that applies a summary function to every
     numeric column in a data frame.
 
-1.  A possible base R equivalent of `col_sum()` is:
+1.  A possible base R equivalent of `col_summary()` is:
 
     ```{r}
     col_sum3 <- function(df, f) {