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19 lines
479 B
Zig
19 lines
479 B
Zig
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const expect = @import("std").testing.expect;
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test "optional pointers" {
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// Pointers cannot be null. If you want a null pointer, use the optional
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// prefix `?` to make the pointer type optional.
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var ptr: ?*i32 = null;
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var x: i32 = 1;
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ptr = &x;
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try expect(ptr.?.* == 1);
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// Optional pointers are the same size as normal pointers, because pointer
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// value 0 is used as the null value.
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try expect(@sizeOf(?*i32) == @sizeOf(*i32));
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}
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// test
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