Anonymous Functions, Part II: gsubfn
gsubfn's as.function and fn$* notation
This is a follow-up to Anonymous Functions, Not Variables. For context, read that first.
R
Anonymous Functions, Not Variables
Use the LHS of a formula to specify variable names in purrr-style lambda functions
I am a very heavy purrr user. The killer
feature is clearly map_df (fairly recently rebranded as map_dfr and
map_dfc for row and column binding, respectively) to iterate over a list à la
lapply and simplify the result to a data frame. Thanks to the power of
dplyr::bind_rows, it fixes all the drawbacks of sapply’s simplify2array
behavior:
Pythagorean Triples
The hidden patterns of right integer triangles
In a quiet moment, I happened across Project Euler’s Question 39:
