light9 Files · light8/util.py

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David McClosky

keyboardcomposer destroy fix and cleanups
- We were destroying KeyboardComposer a little too much. Fortunately,
we weren't passing the right number of arguments, so this was merely
an error.
- About the TODO comment removed: we don't need to use combine_dict
since Submaster logic will be changed entirely when we/if we move
to a SubServer world and keyboard composer will not be the wiser.

def maxes(dicts):
    '''
    ({'a' : 5, 'b' : 9}, {'a' : 10, 'b' : 943})
    '''
    newdict = {}
    for d in dicts:
        for k,v in d.items():
            newdict[k] = max(v, newdict.get(k, 0))
    return newdict

def scaledict(d,scl):
    # scales all values in dict and returns a new dict
    return dict([(k,v*scl) for k,v in d.items()])
    
# class Setting that scales, maxes        

def subsetdict(d, dkeys, default=0):
    """Subset of dictionary d: only the keys in dkeys.  If you plan on omitting
    keys, make sure you like the default."""
    newd = {} # dirty variables!
    for k in dkeys:
        newd[k] = d.get(k, default)
    return newd