目录

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What is CallBack

Callback function take fucnitons as parameters.

Example #1

def doubel(x):    return 2*xdef quadruple(x):    return 4*x# mind functiondef getAddNumber(k, getEventNumber):    return 1+getEventNumber(k)def main():    k=1    i=getAddNumber(k,double)    print(i)    i=getAddNumber(k,quadruple)    print(i)# call mainmain()

Out Pirnt:

35

I think the callback function to be a stupid struct.