Create a schema object

Create a schema object

Usage

schema(...)

Arguments

...

Formulae of the form tidyselect_expr ~ predicate

Value

A Schema object

Examples

# Simple schema with one declared column
my_schema <- schema(
  mpg ~ is.double
)

# Multiple columns
my_schema <- schema(
  Sepal.Length ~ is.numeric,
  Species ~ is.factor
)

# Use tidyselect syntax and anonymous functions
my_schema <- schema(
  starts_with("Sepal") ~ is.numeric,
  c(Petal.Length, Petal.Width) ~ function(x) all(x > 0)
)

# Use named arguments to customize error messages
my_schema <- schema(
  `Must be a positive number` = cyl ~ function(x) all(x > 0)
)