vec_ptype2: Find the common type for a pair of vectors

Description Usage Arguments Implementing coercion methods Dependencies See Also

View source: R/type2.R

Description

vec_ptype2() defines the coercion hierarchy for a set of related vector types. Along with vec_cast(), this generic forms the foundation of type coercions in vctrs.

vec_ptype2() is relevant when you are implementing vctrs methods for your class, but it should not usually be called directly. If you need to find the common type of a set of inputs, call vec_ptype_common() instead. This function supports multiple inputs and finalises the common type.

Usage

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## S3 method for class 'logical'
vec_ptype2(x, y, ..., x_arg = "", y_arg = "")

## S3 method for class 'integer'
vec_ptype2(x, y, ..., x_arg = "", y_arg = "")

## S3 method for class 'double'
vec_ptype2(x, y, ..., x_arg = "", y_arg = "")

## S3 method for class 'complex'
vec_ptype2(x, y, ..., x_arg = "", y_arg = "")

## S3 method for class 'character'
vec_ptype2(x, y, ..., x_arg = "", y_arg = "")

## S3 method for class 'raw'
vec_ptype2(x, y, ..., x_arg = "", y_arg = "")

## S3 method for class 'list'
vec_ptype2(x, y, ..., x_arg = "", y_arg = "")

vec_ptype2(x, y, ..., x_arg = "", y_arg = "")

Arguments

x, y

Vector types.

...

These dots are for future extensions and must be empty.

x_arg, y_arg

Argument names for x and y. These are used in error messages to inform the user about the locations of incompatible types (see stop_incompatible_type()).

Implementing coercion methods

Dependencies

See Also

stop_incompatible_type() when you determine from the attributes that an input can't be cast to the target type.


vctrs documentation built on April 29, 2021, 5:08 p.m.