# **⚡ Booth: Zig (2016)** * **Creator:** Andrew Kelley * **Design Philosophy:** A robust, minimalist replacement for C. Zig has no hidden control flow, no hidden allocations, no preprocessors, and builds code safety directly into system architectures while retaining complete hardware accessibility. * **Key Innovations:** comptime (running ordinary Zig code at compile time), explicit custom allocation parameters, and built-in error union type systems. ## **📐 The Theory of Zero Implicit Allocation** Zig completely rejects hidden memory management allocations. Rather than hardcoding the memory manager (e.g. heap vs stack), every function requiring dynamic allocations accepts an explicit Allocator interface argument: ![][image1]This design guarantee prevents memory fragmentation patterns in critical, safe operating architectures like device driver modules or real-time simulation targets. ## **🚀 Hello, World\!** const std \= @import("std"); pub fn main() \!void { const stdout \= std.io.getStdOut().writer(); try stdout.print("Hello, World\!\\n", .{}); } ## **🎨 Showpiece: Compile-Time Execution & Allocation Control** This file demonstrates compile-time processing via comptime, custom block checks, and strict manual allocations. const std \= @import("std"); // Computes a Fibonacci sequence value at COMPILE TIME\! fn compileTimeFibonacci(comptime n: u32) u32 { if (n \== 0\) return 0; if (n \== 1\) return 1; return compileTimeFibonacci(n \- 1\) \+ compileTimeFibonacci(n \- 2); } pub fn main() \!void { // 1\. Compile-Time Evaluation (Executed entirely by the compiler) const comptime\_result \= comptime compileTimeFibonacci(10); std.debug.print("\[Comptime Engine\] Fib(10) computed during compilation: {}\\n", .{comptime\_result}); // 2\. Explicit Safe Allocation (No hidden allocations) var gpa \= std.heap.GeneralPurposeAllocator(.{}){}; defer \_ \= gpa.deinit(); // Automatically check for memory leaks on exit const allocator \= gpa.allocator(); // Dynamically allocate space for 3 integers const dynamic\_array \= try allocator.alloc(u32, 3); defer allocator.free(dynamic\_array); // Manual cleanup required\! dynamic\_array\[0\] \= 10; dynamic\_array\[1\] \= 20; dynamic\_array\[2\] \= 30; std.debug.print("\[Heap\] Allocated array on heap safely: \[{}, {}, {}\]\\n", .{ dynamic\_array\[0\], dynamic\_array\[1\], dynamic\_array\[2\], }); } [image1]: