Transfer an R vector as a JavaScript typed array

Marks a vector for contiguous transfer to JavaScript. Raw vectors become Uint8Array, integer vectors become Int32Array, and double vectors become Float64Array. Integer vectors containing NA are rejected. Double NA and NaN values both become JavaScript NaN. On return, the JavaScript Int32Array value -2147483648 becomes R's NA_integer_ sentinel.

Usage

js_typed_array(x)

Arguments

x

A raw, integer, or double vector.

Value

The input vector marked for typed-array conversion.

Examples

ctx <- JSContext$new()
ctx$source(code = "function total(x) { return x.reduce((a, b) => a + b, 0); }")
ctx$call("total", js_typed_array(as.double(1:4)))
#> [1] 10