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Merge pull request #79 from OaCantona/patch-4 

Difference in code
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Hadley Wickham 2016-03-26 13:49:35 -05:00
parent 5c7cf27b2a a0fb7283b0
commit 51943e6d10
1 changed files with 1 additions and 1 deletions
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iteration.Rmd
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@ -100,7 +100,7 @@ Every for loop has three components:
it's easy to create them accidentally. If you use `1:length(x)` instead it's easy to create them accidentally. If you use `1:length(x)` instead
of `seq_along(x)`, you're likely to get a confusing error message. of `seq_along(x)`, you're likely to get a confusing error message.
1. The __body__: `output[i] <- median(df[[i]])`. This is the code that does 1. The __body__: `output[[i]] <- median(df[[i]])`. This is the code that does
the work. It's run repeatedly, each time with a different value for `i`. the work. It's run repeatedly, each time with a different value for `i`.
The first iteration will run `output[[1]] <- median(df[[1]])`, The first iteration will run `output[[1]] <- median(df[[1]])`,
the second will run `output[[2]] <- median(df[[2]])`, and so on. the second will run `output[[2]] <- median(df[[2]])`, and so on.