Convert a function to a short label string

gsDesignTune() uses function-valued columns (for example, spending functions) in results tables. This method provides a stable, readable label for such functions to keep printing and plotting robust.

Usage

# S3 method for class '`function`'
toString(x, ...)

Arguments

x

A function.

...

Unused (included for S3 method compatibility).

Value

A character scalar.

Examples

toString(stats::rnorm)
#> [1] "stats::rnorm"