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Update Andrew_exper.Rmd #56

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3 changes: 2 additions & 1 deletion 10_Expressions/Andrew_exper.Rmd
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,7 @@ is.constant()
is.elem <- function(x){
testers <- c(is.call, is.name, is.pairlist, is.atomic)
tested <- vapply(testers, function(f) f(x), FUN.VALUE = TRUE)
if(is.atomic(x) & length(x) > 1) stop("Atomic vectors cannot have length larger than one in an expression.")
any(tested)
}

Expand Down Expand Up @@ -236,4 +237,4 @@ arguements are matched by position

### Read the documentation and source code for pryr::partial(). What does it do? How does it work? Read the documentation and source code for pryr::unenclose(). What does it do and how does it work?

### The actual implementation of curve() looks more like
### The actual implementation of curve() looks more like