MDCMap

Clears all values from this MDC

True if this MDC contains the specified key

Contextualizes setting multiple values similar to update, but returns them to their previous value upon completion of the context function f.

Gets the value function for this key if set

Retrieves the functional map

Removes a key from this MDC instance

Sets the value for the specified key. This method differs from update by taking an Option that will remove the key if set to None. Returns the previous value for this key.

Updates the value for the specified key. The context method should be preferred to avoid leaving MDC values set forever. Returns the previous value for this key.

Applies an elapsed function as an MDC value. This represents a dynamically changing value of time elapsed since the this was set.