maditr does not work without library(maditr)

[xiaodaigh]

library(dplyr)
iris %>% 
  maditr::let(lat_lon = 42) %>% 
  head

Does not work, if I do NOT first library(maditr). This is probably caused by the eval.parent,

let.data.frame <- function (data, ..., by, keyby, i) {
    eval.parent(substitute(let_if(data, i, ..., by = by, keyby = keyby)))
}

I am not an expert in NSE but what do you think about this simple fix

let.data.frame <- function (data, ..., by, keyby, i) {
    eval.parent(substitute(maditr::let_if(data, i, ..., by = by, keyby = keyby)))
}

so you don't assume people have run library(maditr).

Basically this arises from me trying to see if maditr can be integrate with disk.frame see DiskFrame/disk.frame#231

[gdemin]

Thanks, I will fix it with next release.

[gdemin]

Fixed in 0.8.1