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Generic algorithms

Name: Anonymous 2008-11-28 11:31

Implement a single function that takes two arguments and returns the bigger of the two. Assume you don't know the type of the  arguments and you don't know if the types can be compared. Assume that if a type can be compared, it will always be implemented by following a single standard. Use the latest standard of your language. Write the simplest program
that will pass an integer 1(one) and a float 1.1(one point one) into the function and write the result to standard output.

Post the compiler you used, the code and the result.
Write what will happen if the max function is called with broken syntax (I'm looking at you C macros).
Write what will happen if the objects of a type can't be compared.

I'll start with C and C++.
Compiler: gcc 4.3.2 20081105 (Red Hat 4.3.2-7)
#include <iostream>
template<class F>
F& max(F& a, F& b) { return (a < b) ? b : a; }
int main() { std::cout << max(1, 1.1) << '\n'; }

Results: Compile time error:
max.cpp: In function ‘int main()’:
max.cpp:6: error: no matching function for call to ‘max(int, double)’

Bad syntax: Standard compile-time error
No comparison: Standard compile-time error about undefined operator<

#define max(a, b) (less(a, b) ? b : a)
#include <stdio.h>
int less(int a, int b) { return a < b; }
int main() { printf("%f\n", max(1, 1.1)); }

Result: Bad output
1.000000
Bad syntax: Depends on the error in the syntax. Can either compile and cause undefined behaviour or fail at compile time with strange syntax errors.
No comparison: Standard compile-time error about an undefined function.

Name: Anonymous 2008-11-30 22:54

>>47

As I ALREADY FUCKING SAID, the average person is not going to know what that is if it is up to them to work with dates in an application. Even if your gave an input hint with something like yyyy-mm-dd they would still fuck it up, people are fucking stupid.

Now if you are an expert loonix programer you would require only the ISO date. You would give no input hint. You would not document this. Someone will have to find that fact on some obscure outdated wikipage.

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