language · language ·
Defaults, named arguments, and overloads
Trailing parameters can have defaults, calls can name arguments after positional ones, and functions can overload on admitted signatures.
Use defaults for the common case, named arguments where a call would otherwise hide meaning, and overloads only when the operations are truly the same idea.
Name(Type value = default)
Name(positional, option: value)Status: stable
A readable call
Use defaults for the common case, named arguments where a call would otherwise hide meaning, and overloads only when the operations are truly the same idea.
cpu · language · type checked
Move(text actor, int x, int y, bool animate = true)
{
Console.Log(actor + " moved")
}
Move("Nova", 12, y: 7, animate: false)
project.mech
manifestVersion = "2"
package = "api.example.language__parameters_calls"
version = "0.1.0"
languageEdition = "yeho-core-2026.1"
[app]
kind = "headless"
Notes and source
Default parameters must trail required parameters.
After the first named argument, keep the remaining arguments named.
yeho/docs/language/language-core.md §4.2; parser_expressions.cpp parseCallArguments