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Is it possible to create a comptime function in zig that would generate a new struct type? The function would receive an array of strings and an array of types. The strings are the names of subsequent struct fields.
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Zig is an imperative, general-purpose, statically typed, compiled system programming language designed by Andrew Kelley. The language is designed for "robustness, optimality and maintainability", supporting compile-time generics, reflection and evaluation, cross-compilation and manual memory management.
In Zig, the programmer can label variables as comptime. This guarantees to the compiler that every load and store of the variable is performed at compile-time. Any violation of this results in a compile error.
Zig is faster to type and faster to say than Rust. Though way behind "C", Rust comes out way ahead of Zig, alphabetically. Both are based on LLVM and low-level enough that the user can control almost everything given to LLVM. In this way their best-case run-time performance is pretty much identical.
This is the most straight-forward way of obtaining Zig: grab a Zig bundle for your platform from the Downloads page, extract it in a directory and add it to your PATH to be able to call zig from any location.
This has been implemented now as https://github.com/ziglang/zig/pull/6099
const builtin = @import("std").builtin;
const A = @Type(.{
.Struct = .{
.layout = .Auto,
.fields = &[_]builtin.TypeInfo.StructField{
.{ .name = "one", .field_type = i32, .default_value = null, .is_comptime = false, .alignment = 0 },
},
.decls = &[_]builtin.TypeInfo.Declaration{},
.is_tuple = false,
},
});
test "" {
const a: A = .{ .one = 25 };
}
The TypeInfo struct is defined here.
85
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