easy question, how to double a variable

[Mel]

What are you, eleven years old?

Look, you asked us to answer for you what is CLEARLY a homework question.
It is unethical for you to ask that, and it is unethical for us to answer
it.

Forget ethical. We can do his homework for him, we can perhaps pass exams
for him, maybe graduate for him, and then with our luck, he'll get a job in
our office and we get to do his work for him.

Mel.

 

[Grant Edwards]

Forget ethical. We can do his homework for him, we can perhaps pass exams
for him, maybe graduate for him, and then with our luck, he'll get a job in
our office and we get to do his work for him.

No, no, no. The plan is to do his homework for him so that
he's incompetent when he graduates and won't be competition for
the rest of us who did do our homework.

 

[Hyuga]

No, no, no.  The plan is to do his homework for him so that
he's incompetent when he graduates and won't be competition for
the rest of us who did do our homework.

Well, while they may not be as much competition come promotion time, I
think Mr. Finney had it right that these people *do* still somehow get
hired, and then the rest of us end up having to do enough work for
multiple people. Sometimes spending more time redoing other peoples'
shoddy work than it would have taken to do ourselves in the first
place. Annoying for the programmer, but really bad for business.

 

[Rhodri James]

you brain needs error checking!

Your post, by contrast, needs grammar checking.

 

[Steven D'Aprano]

Well, while they may not be as much competition come promotion time, I
think Mr. Finney had it right that these people *do* still somehow get
hired

....


It was Mel Wilson, not Ben Finney, who write the paragraph starting with
"Forget ethical".

 

[Casey Webster]

No, no, no.  The plan is to do his homework for him so that
he's incompetent when he graduates and won't be competition for
the rest of us who did do our homework.

Don't forget the Peter principal --- we might end up working for him!

Btw, I can't believe nobody provided the simplest literal solution:

def twice(i):
return i, i

 

[Iain King]

You're saying it _can_ be done in Python? They must have added
something to the standard library again. I mean how can you return
twice a value without a twice function to start with? I've tried.
You'd think

def twice(n):
  return twice(n)

would work, but I get this really long error message.


That would be cruel. I mean the guy has enough problems already...

Sorry, there is no 'twice' builtin. I think what you are looking for
is:

def twice(n):
return return n


Iain

 

[Pablo Torres N.]

Sorry, there is no 'twice' builtin.  I think what you are looking for
is:

def twice(n):
    return return n

Iain

Actually, what he wants is:

(def twice (x)
(+ (once x) (once x)))

 

[Dennis Lee Bieber]

Actually, what he wants is:

(def twice (x)
(+ (once x) (once x)))

« -> x « x DUP + » »
'twice'
STO

 

[devilkin]

you brain needs error checking!

this kid knows error checking...may be he know exceptions as well

 

[Albert van der Horst]

you brain needs error checking!

Whose brain? At least I know this:

Your brain is beyond repair. Go for a brain transplant.

Groetjes Albert

 

[Chris Colbert]

I come from a scientific background, so my approach to the solution of
this problem is a little different.

It makes use of some numerical approximations, but that's not
necessarily a bad thing, because it helps avoid singularities. So it
could be a little more robust than other solutions presented here.

It also has a little more functionality: Say you wanted to return
three times a variable, you wouldnt want to write another function to
do that for you, so now you just pass in how many times you want the
variable repeated as the first parameter.

Hope this helps! Cheers!

import math

def repeat(how_many_times, x):
def f(n):
return 1./(2**n)

def summation(func, howmany):
if howmany == 1:
return func(1)
else:
return func(howmany) + summation(func, howmany-1)

def eulerify(num):
return abs(math.cos(math.pi) + 1j*(math.sin(math.pi))) * num

def get_coefficient(multiplier):
return eulerify(multiplier * summation(f, 100))

return int(eulerify(get_coefficient(how_many_times) * x))

 

[Tom Kermode]

def twice(parameter = 2)
return 4

 Write the definition of a function  twice , that receives an  int
parameter and returns an  int that is twice the value of the
parameter.

how can i do this