Zig 0.16 Notes

This project targets exactly Zig 0.16.0; the SDK source is the authority, not memory of older versions.

• Allocators: std.mem.Allocator interface from lib/std/mem/Allocator.zig; DebugAllocator, ArenaAllocator, FixedBufferAllocator, SmpAllocator from std.heap.
• Lists: unmanaged std.ArrayList(T) — .empty, methods taking gpa explicitly (append(gpa, x), deinit(gpa)).
• Maps: managed StringHashMap / AutoHashMap (.init(gpa) / .deinit()).
• I/O: new std.Io (Io.Reader.readSliceShort, Io.Timestamp, Io.Writer.print); debug output via std.debug.print. No legacy std.io usage.
• Text: std.ascii predicates, std.mem.sort with context comparators, std.StaticBitSet / DynamicBitSetUnmanaged.
• Testing: std.testing.allocator, failing_allocator, checkAllAllocationFailures-style failure injection.
• Build: b.addModule / createModule / addTest / addExecutable with root_module, addRunArtifact, getEmittedDocs, addInstallDirectory.
• Time: monotonic clock via std.Io.Timestamp.now(io, .awake) — std.time no longer hosts wall-clock helpers.

When in doubt, read C:\tools\zig-x86_64-windows-0.16.0\lib\std\ before assuming an API exists.

Related: Compatibility: Zig.