Dragoș Moldovan-Grünfeld dragosmg

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R developer

dragosmg / R: Use faster vecLib

Created September 1, 2018 21:55 — forked from nicebread/R: Use faster vecLib

	These code snippets have been tested on R 3.1.0 and Mac OS 10.9.3. They presumably do not work on R 2.X!

	## Enter these commands in the Mac OS Terminal

	# use faster vecLib library
	cd /Library/Frameworks/R.framework/Resources/lib
	ln -sf /System/Library/Frameworks/Accelerate.framework/Frameworks/vecLib.framework/Versions/Current/libBLAS.dylib libRblas.dylib

	# return to default settings
	cd /Library/Frameworks/R.framework/Resources/lib

dragosmg / rprofile.R

Created March 19, 2020 14:23 — forked from romainfrancois/rprofile.R

	if(interactive()) {
	.__Rprofile_env__. <- new.env(parent = emptyenv())
	.__Rprofile_env__.[["install"]] <- pak::pkg_install
	attach(.__Rprofile_env__.)

	library(usethis, warn.conflicts = FALSE)
	library(conflicted)
	conflict_prefer("filter", "dplyr")
	conflict_prefer("sql", "dbplyr")

dragosmg / .Rprofile

Created April 1, 2020 08:15 — forked from gadenbuie/.Rprofile

current project and branch in R command prompt

	if (interactive()) {
	# requires: devtools::install_github("gaborcsardi/prompt")
	.prompt_grk <- function(...) {
	dir <- if (rstudioapi::hasFun("getActiveProject") &&
	!is.null(rstudioapi::getActiveProject())) {
	basename(rstudioapi::getActiveProject())
	} else {
	basename(getwd())
	}

dragosmg / construct-dupe-partition-dragos.R

Created November 8, 2021 16:13

	library(arrow, warn.conflicts = FALSE)
	library(dplyr, warn.conflicts = FALSE)

	# target dataset size is 100k columns, 300k rows
	# This is large, but we should be able to handle it (especially when it's
	# partitioned). We can reduce the number of columns if we want to reproduce, but
	# we should still be able to handle this (even if we're not perfectly tuned for it)
	rows <- 300000
	cols <- 100000
	partitions <- 20

dragosmg / keybase.md

Created December 17, 2021 11:18

I hereby claim:

To claim this, I am signing this object:

dragosmg / markdown-details-collapsible.md

Created January 20, 2022 21:49 — forked from pierrejoubert73/markdown-details-collapsible.md

How to add a collapsible section in markdown.

A collapsible section containing markdown

Click to expand!

dragosmg / decimal_date_bench::mark

Created March 30, 2022 09:24

Benchmarking the difference between the old implementation of `decimal_date()` (making more use of `difftime`) and the new implementation

	# decimal_date_strptime is:
	register_binding("decimal_date_strptime", function(date) {
	# browser()
	y <- build_expr("year", date)
	# timezone <- call_binding("tz", date)
	start <- call_binding("make_datetime", year = y, tz = "UTC")
	end <- call_binding("make_datetime", year = y + 1L, tz = "UTC")
	# maybe use yday here
	sofar <- call_binding("difftime", date, start, units = "secs")
	total <- call_binding("difftime", end, start, units = "secs")