runtime.File · builtin ·

File.TryReadBytes

Try read bytes through the File runtime.

builtincpufileyeho

Built into Yeho; no package import is needed. Native services require an admitted host and the correct resource lifecycle.

File.TryReadBytes(text path, int maximum_bytes, list of byte destination) -> int

Status: registered-intrinsic

Parameters

text path
Supply path as text.
int maximum_bytes
Supply maximum bytes as int.
list of byte destination
Supply destination as list of byte.

Call File.TryReadBytes

A complete typed caller with illustrative arguments. Native operations need the corresponding host and resources.

cpu · builtin · type checked

text path = "path"
int maximum_bytes = 4
list of byte destination = []
int result = File.TryReadBytes(path, maximum_bytes, destination)
Console.Log(Text.From(result))
project.mech
manifestVersion = "2"
package = "api.example.runtime__file_tryreadbytes"
version = "0.1.0"
languageEdition = "yeho-core-2026.1"

[app]
kind = "headless"
Notes and source

The example checks the call shape. Opening windows, recording audio, changing files, network operations, and process operations have real effects when run. Follow the corresponding package lifecycle before using live resources.

yeho/src/compiler/common/intrinsic_registry.cpp:807