vld_spec: Specify validation checks

In egnha/rong: Functional Input Validation

Description

Specify validation checks

Usage

vld_spec(...)

Arguments

...	Validation checks (with support for quasiquotation).

See Also

vld_exprs()

Examples

f <- function(x, y) "Pass"

## Make a positivity checker
chk_pos <- vld_spec("{{.}} is not positive" := {isTRUE(. > 0)}(x, x - y))
foo <- firmly(f, !!! chk_pos)

foo(2, 1)
## Not run: 
foo(1, 2)
## End(Not run)

egnha/rong documentation built on May 7, 2019, 9:48 p.m.