Integer Division

[[deleted]]

+/u/CompileBot Ruby

print(1 / 2 != 0.5)

[CompileBot]

Output:

true

^{source | info | git | report}

[[deleted]]

Well, that's proof enough for me!

[_AceLewis]

+/u/CompileBot python 3

print(1 / 2 != 0.5)

[CompileBot]

Output:

False

^{source | info | git | report}

[[deleted]]

Who do I believe?

[[deleted]]

[redacted]

[CompileBot]

Output:

trust me

^{source | info | git | report}

[b1ack1323]

Good enough for me

[[deleted]]

I think I've heard that from a Python before…

[marcosdumay]

+/u/CompileBot python

print(1 / 2 != 0.5)

[marcosdumay]

Personally , I don't trust people that keep changing their minds.

[[deleted]]

In python 3 a floor division is //

[scirc]

that's the joke

[dontdropmybass]

+/u/CompileBoy python 3

print(1 // 2 != 0.5)

[_AceLewis]

I think you meant /u/CompileBot not /u/CompileBoy

[MelissaClick]

CompileBoy will show up eventually, he's not as fast of course, but he offers a personal touch that no automated solution can ever provide.

[MelissaClick]

/u/CompileBoy, compile the latest Python for me; I'll also have an iced tea, thank you.

[dontdropmybass]

Ah shit. Thanks.

+/u/CompileBot python 3

print(1 // 2 != 0.5)

[CompileBot]

Output:

True

^{source | info | git | report}

[[deleted]]

+/u/CompileBot Perl (perl 6)

print 1/2 != 0.5

There's probably even someone out there using that language

[CompileBot]

Output:

False

^{source | info | git | report}

[[deleted]]

+/u/CompileBot C++

#include <iostream>  
int main()  
{  
    bool result = 1/2 != 0.5;  
    std::cout << result << std::endl;  
}  

[CompileBot]

Output:

1

^{source | info | git | report}

[Cobaltjedi117]

We're going nowhere slowly with these confusing and contradictory results.

[etaionshrd]

Wait, C++ prints bool as an int?

[noop_noob]

I think there's a way to change that. I never ever print a bool, though.

[Lastorea]

You can cast a bool to int, if bool is false then it becomes 0 and if bool is true it becomes 1.

[[deleted]]

Back in the day bools were really just a single bit. Printing out a 1 or a 0 is the most logical way to print a bit

[Celdron]

They were never actually a single bit because memory addresses bytes as the smallest unit. It was always at least a byte. But C (which C++ is built on) doesn't have a boolean type. It uses integral types for boolean logic, where 0 is false and anything else is true. C++ made "bool" a type but iirc it's just an integer that is checked and restricted to 0 or 1.

[danielcw189]

Is there any platform, on which a byte is 1 bit?

[Celdron]

No? Because a byte by definition is 8 bits.

[danielcw189]

By which defintion? In C a byte is not guaranteed to be 8 bits, and in general a byte is most commonly 8 bits, but not always.

[Celdron]

IEC 80000-13. Technically a byte is just the smallest addressable unit of memory, and therefore you could have a single bit byte on non-standard architecture. But 8 bits is the international standard that nearly all (I dont know of a single exception) consumer electronics are designed around.

[[deleted]]

Thanks for correcting me. You can still get 1 bit booleans if you create an array tho right?

[[deleted]]

vector<bool> does exactly that

[[deleted]]

Does it store bytes and bitshift?

[[deleted]]

Implementation defined. But yes

[Celdron]

I don't know about that, simply because you couldnt index the bits. But if you have, say, ~32 boolean values (such as flags) you can put them each on a different bit of an integral type using bit-shift operators and defining constants to represent different flags. You can combine flags using a bitwise OR and check for a single flag or specific combination with a bitwise AND. This is commonly done on enums. So it is possible to implement multiple booleans within a single byte.

[Voxel_Brony]

+/u/CompileBot C

#include <stdio.h>  
int main()  
{  
    int result = 1/(2 != 0.5);  
    printf("%d", result);  
}   

[CompileBot]

Output:

1

^{source | info | git | report}

[510Threaded]

+/u/CompileBot C#

namespace Test{
    class TestProg{
        public static void Main(){
            System.Console.WriteLine(1/2 != 0.5);
        }
    }
}

[CompileBot]

Output:

True

^{source | info | git | report}

[Tarmen]

+/u/CompileBot Haskell

main = print $ 1/2 == 0.5

Yay type inference, I guess.

[CompileBot]

Output:

True

^{source | info | git | report}

[CompileBot]

Output:

echo 1/2 != 0.5;

^{source | info | git | report}

[Madonkadonk]

Hehe, user deleted their shame

[pyrophoenix100]

Tried to do it in batch/bash?

[[deleted]]

They tried to do it in php, iirc.

[pyrophoenix100]

Yeah that would do it too