default_ops: A null coalescing operator.

In gschofl/gsmisc: A collection conveniance functions

Description

If the LHS eveluates to NULL, a zero-length vector, or an empty string, return the RHS, otherwise return the LHS.

Usage

a %||% b

a %|% b

a %|na|% b

a %|NA|% b

a %|null|% b

Arguments

a	Some value.
b	Some default value.

Details

%|% is a vectorized version of %||%

%|na|% returns the RHS if the LHS evaluates to NA

%|NA|% is a vectorized version of %|na|%

%|null|% explicitly works only on NULL but not empty strings and vectors.

Value

a, if a is not NULL, not an empty vector, not an empty string, or not NA.

Examples

a1 <- "some value"
a2 <- ""
b <- "default value"
a1 %||% b
a2 %||% b

gschofl/gsmisc documentation built on May 17, 2019, 8:52 a.m.