row_first_match: Find the value of the first match in rowwise

In perlatex/easyuse: A Package to make social statistics more easy and more tidyverse

Description

Find the value of the first match in rowwise. The code from https://community.rstudio.com/t/interesting-tidy-eval-use-cases/21121/39

Usage

row_first_match(.f, ...)

Arguments

.f

A function, formula, or vector, like in 'purrr::detect()' If a function, it is used as is. If a formula, e.g. ~ .x + 2, it is converted to a function. There are three ways to refer to the arguments: * For a single argument function, use '.' * For a two argument function, use '.x' and '.y' * For more arguments, use '..1', '..2', '..3' etc This syntax allows you to create very compact anonymous functions.

...

column names selected in data.frame, e.g. 'x, y, z'.

Examples

df <- tibble(
  a = c("b", "d", "l", "m"), 
  x = c(1, 1, 1, 2), 
  y = c(5, 1, 2, 3), 
  z = c(1, 1, 0, 1)
)


df %>% dplyr::mutate(new_col = first_match(~ . > 1, x, y, z))

perlatex/easyuse documentation built on April 14, 2020, 5:35 a.m.