def recYesOnString(inString):
(progString, newInString) = utils.DESS(inString)
val = universal(progString, newInString)
if val == 'yes':
return 'yes'
else:
return 'no'
def alterGAGAtoTATA(inString):
(progString, newInString) = utils.DESS(inString)
val = universal(progString, newInString)
if val == 'GAGA':
return 'TATA'
else:
return val
def alterYesToGAGA(inString):
(progString, newInString) = utils.DESS(inString)
val = universal(progString, newInString)
if val == 'yes':
return 'GAGA'
else:
return 'no'
def alterYesToNumChars(inString):
(progString, newInString) = utils.DESS(inString)
val = universal(progString, newInString)
if val == 'yes':
# return a string with three characters
return 'xxx'
else:
# return a string with two characters
return 'xx'
def alterYesToHalt(inString):
(progString, newInString) = utils.DESS(inString)
val = universal(progString, newInString)
if val == 'yes':
# return value is irrelevant, since returning any string halts
return 'halted'
else:
# deliberately enter infinite loop
utils.loop()
def simulateTM1(inString):
(progString, newInString) = utils.DESS(inString)
return simulateTM(progString, newInString)
def universal1arg(inString):
progString, newInString = utils.DESS(inString)
return universal(progString, newInString)
def repeat(inString):
(progString, newInString) = utils.DESS(inString)
val = universal(progString, newInString)
val == val + val
return val