Struct telemetry::keyed::KeyedIgnoring  
            
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        [src]
pub struct KeyedIgnoring<T, U> {
    // some fields omitted
}A histogram that ignores any input.
Useful for histograms that can be activated/deactivated either at compile-time (e.g. because they are attached to specific versions of the application) or during startup (e.g. depending on command-line options).