### re: Daily Coding Puzzles - Oct 29th - Nov 2nd VIEW POST

re: Thursday Calculating with Functions: This time we want to write calculations using functions and get the results. For example: seven(times(five...

Python solution:

``````def perform_operation(operations, number):
if not operations: return number
if operations["sign"] == "*":
return operations["value"] * number
if operations["sign"] == "+":
return operations["value"] + number
if operations["sign"] == "-":
return number - operations["value"]
if operations["sign"] == "/":
return  number // operations["value"]

zero = lambda operations=None : perform_operation(operations, 0)
one = lambda operations=None : perform_operation(operations, 1)
two = lambda operations=None : perform_operation(operations, 2)
three = lambda operations=None : perform_operation(operations, 3)
four = lambda operations=None : perform_operation(operations, 4)
five = lambda operations=None : perform_operation(operations, 5)
six = lambda operations=None : perform_operation(operations, 6)
seven = lambda operations=None : perform_operation(operations, 7)
eight = lambda operations=None : perform_operation(operations, 8)
nine = lambda operations=None : perform_operation(operations, 9)

get_operation = lambda operation, num : {"sign": operation, "value": num}
plus = lambda num : get_operation("+", num)
minus = lambda num : get_operation("-", num)
times = lambda num : get_operation("*", num)
divided_by = lambda num : get_operation("/", num)
``````

Though I prefer this one from the CodeWars solutions!

``````def zero(f = None): return 0 if not f else f(0)
def one(f = None): return 1 if not f else f(1)
def two(f = None): return 2 if not f else f(2)
def three(f = None): return 3 if not f else f(3)
def four(f = None): return 4 if not f else f(4)
def five(f = None): return 5 if not f else f(5)
def six(f = None): return 6 if not f else f(6)
def seven(f = None): return 7 if not f else f(7)
def eight(f = None): return 8 if not f else f(8)
def nine(f = None): return 9 if not f else f(9)

def plus(y): return lambda x: x+y
def minus(y): return lambda x: x-y
def times(y): return lambda  x: x*y
def divided_by(y): return lambda  x: x/y
``````
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