make_placeholder_fun: Create a function that creates n placeholders

In r-dbi/DBItest: Testing DBI Backends

Create a function that creates n placeholders

Description

For internal use by the placeholder_format tweak.

Usage

make_placeholder_fun(pattern)

Arguments

pattern

⁠[character(1)]⁠ Any character, optionally followed by 1 or name. Examples: "?", "$1", ":name"

Value

⁠[function(n)]⁠
A function with one argument n that returns a vector of length n with placeholders of the specified format.

Examples

body(DBItest:::make_placeholder_fun("?"))
DBItest:::make_placeholder_fun("?")(2)
DBItest:::make_placeholder_fun("$1")(3)
DBItest:::make_placeholder_fun(":name")(5)

r-dbi/DBItest documentation built on April 15, 2024, 11:26 a.m.