condition: Conditional expression ($cond)

In mongopipe: Query MongoDB Documents with R

Description

Evaluates a boolean expression to return one of the two specified return expressions.

Usage

condition(test, yes, no)

Arguments

test	Expression which returns a boolean value.
yes	Return this if the test returns true.
no	Return this if the test returns false.

Value

Return a list for using in mongopipe.

Examples

## Not run: 
cond <- condition(test = list("$isArray"="$chart"),
                  yes = list("$size"="$chart"),
                  no = 0)
jsonlite::toJSON(cond)

## End(Not run)

mongopipe documentation built on Jan. 20, 2021, 5:08 p.m.