6dba1f1c8e
* `@truncate` builtin allows casting to the same size integer. It also performs two's complement casting between signed and unsigned integers. * The idiomatic way to convert between bytes and numbers is now `mem.readInt` and `mem.writeInt` instead of an unsafe cast. It works at compile time, is safer, and looks cleaner. * Implicitly casting an array to a slice is allowed only if the slice is const. * Constant pointer values know if their memory is from a compile- time constant value or a compile-time variable. * Cast from [N]u8 to []T no longer allowed, but [N]u8 to []const T still allowed. * Fix inability to pass a mutable pointer to comptime variable at compile-time to a function and have the function modify the memory pointed to by the pointer. * Add the `comptime T: type` parameter back to mem.eql. Prevents accidentally creating instantiations for arrays.
45 lines
1.1 KiB
Zig
45 lines
1.1 KiB
Zig
const assert = @import("std").debug.assert;
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const Node = struct {
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payload: i32,
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children: []Node,
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};
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fn structContainsSliceOfItself() {
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@setFnTest(this);
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var nodes = []Node {
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Node {
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.payload = 1,
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.children = []Node{},
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},
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Node {
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.payload = 2,
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.children = []Node{},
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},
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Node {
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.payload = 3,
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.children = ([]Node{
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Node {
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.payload = 31,
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.children = []Node{},
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},
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Node {
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.payload = 32,
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.children = []Node{},
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},
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})[0...],
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},
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};
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const root = Node {
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.payload = 1234,
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.children = nodes[0...],
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};
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assert(root.payload == 1234);
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assert(root.children[0].payload == 1);
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assert(root.children[1].payload == 2);
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assert(root.children[2].payload == 3);
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assert(root.children[2].children[0].payload == 31);
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assert(root.children[2].children[1].payload == 32);
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}
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