Zig

The Zig programming language.

Builtin functions are prefixed with @.
pub is used to make a function available outside the file.
// normal comments, /// doc comments.
All function parameters are constant.
Struct fields can be given default values.
Arrays are fixed size, size of a part of the type.
Slices are pointers to arrays with length (but without capacity).
Strings are pointers to arrays of u8.
String literals are NULL-terminated, like in C.
.{} creates an anonymous struct literal. This is used instead of variadic parameters.
and/or instead of &&/||.
if/else can be used as a ternary operator.
switch is exhaustive: missing cases is a compile-time error.
Any value can be declared as optional by prepending the type with ?. Optional types can be null.
undefined is used for uninitialized variables.
defer executes on scope exit, errdefer executes on error.
foo.*: pointer dereference.
There are no interfaces, but interface-like things such as std.mem.Allocator.
Types are first-class citizens.
Generics are implemented using comptime.