devctrl.utility.decrease_value

decrease_value(values, getter, setter, name)

From a list of values, get the current value, decrease the value to the next possible value and set it using the getter.

Parameters:

• values – list of values

• getter – Function returning a value in values

• setter – Function taking a value from values

• name – Name of the thing, used in a potential error message

Returns:

The new value