zig

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inline_prong_range.zig (301B) - Raw

      1 fn isFieldOptional(comptime T: type, field_index: usize) !bool {
      2     const fields = @typeInfo(T).@"struct".fields;
      3     return switch (field_index) {
      4         inline 0...fields.len - 1 => |idx| @typeInfo(fields[idx].type) == .optional,
      5         else => return error.IndexOutOfBounds,
      6     };
      7 }
      8 
      9 // syntax