#---------- Some examples using higher-order functions----------#
# Don't nest filters, just produce func that does both
short_regvals = filter(both(shortline, isRegVal), lines)

# Don't multiply ad hoc functions, just describe need
regroot_lines = \
    filter(some([isRegDBRoot, isRegDBKey, isRegDBVal]), lines)

# Don't nest transformations, make one combined transform
capFlipNorm = compose3(upper, flip, normalize)
cap_flip_norms = map(capFlipNorm, lines)