scalaType: Get or Specify a Scala Type

In rscala: Bridge Between 'R' and 'Scala' with Callbacks

Get or Specify a Scala Type

Description

This function gets the Scala type of an rscala reference. It also, together with the associated convenience objects, specifies a Scala type for transcompilation purposes.

Usage

scalaType(type)

stI0

stD0

stL0

stR0

stS0

stI1

stD1

stL1

stR1

stS1

stI2

stD2

stL2

stR2

stS2

Arguments

type	An rscala reference or a character vector of length one giving a Scala type.

Format

See 'Value' below.

An object of class rscalaType of length 1.

An object of class rscalaType of length 1.

An object of class rscalaType of length 1.

An object of class rscalaType of length 1.

An object of class rscalaType of length 1.

An object of class rscalaType of length 1.

An object of class rscalaType of length 1.

An object of class rscalaType of length 1.

An object of class rscalaType of length 1.

An object of class rscalaType of length 1.

An object of class rscalaType of length 1.

An object of class rscalaType of length 1.

An object of class rscalaType of length 1.

An object of class rscalaType of length 1.

An object of class rscalaType of length 1.

Details

The convenience objects are of the form stXY (where X is in {I, D, L, R, S} and Y is in {0, 1, 2}) as as indicated below:

• I corresponds to Scala's Int and R's integer.

• D corresponds to Scala's Double and R's double.

• L corresponds to Scala's Boolean and R's logical.

• R corresponds to Scala's Byte and R's raw.

• S corresponds to Scala's String and R's character.

• 0 corresponds to a Scala primitive and an R length one vector.

• 1 corresponds to a Scala array and an R vector.

• 2 corresponds to a Scala array of arrays and an R matrix.

For example, stS2 is equivalent to Scala's scalaType("Array[Array[String]]") and R's type for matrix(character()). Also, stL1 is equivalent to Scala's scalaType("Boolean") and R's type for logical(1).

Value

An object of class rscalaType whose value is a character vector of length one indicating a Scala type.

Examples

scalaType("Double")
stD0
scalaType("Array[Byte]")
stR1
scalaType("Array[Array[Int]]")
stI2

rscala documentation built on Aug. 15, 2023, 9:07 a.m.