maybe_add: adds value to lst with the key nm if nm is not already in lst

In csps-efpc/TokenLink: Joins two dataframes using tokens or like words

adds value to lst with the key nm if nm is not already in lst

Description

adds value to lst with the key nm if nm is not already in lst

Usage

maybe_add(lst, nm, val)

Arguments

lst	a list
nm	string that is a key
val	a value to add to the list

Examples

list(a = 1, b = 2) |> maybe_add('c', 4) |> maybe_add('a', 99)

csps-efpc/TokenLink documentation built on Feb. 10, 2023, 3:30 a.m.