Search code examples
jsonzig

Creating a json write stream doesn't compile

I am trying to use JSON in zig and I don't understand why this doesn't compile:

const file = std.fs.cwd().createFile("Hello", .{.read = true}) catch unreachable;
const stream = std.json.writeStream(std.fs.File.Writer, 5000000);
_ = stream;

The error:

error: parameter of type 'type' must be declared comptime
        pub fn init(stream: OutStream) Self {
Solution

  • std.json.writeStream wants an instance of a write stream, you should pass to it file.writer() instead of std.fs.File.Writer.