zng-wgt-window 0.7.3

Part of the zng project.
Documentation 
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fn main() {
    macro_rules! enable {
        ($feature:tt) => {
            if !cfg!(feature = $feature) {
                println!(concat!("cargo:rustc-cfg=feature=\"", $feature, "\""))
            }
        };
    }

    if cfg!(debug_assertions) && cfg!(feature = "debug_default") {
        enable!("dyn_closure");
    }
}