isEven API

mac@programming.dev to Programmer Humor@programming.dev – 288 points –
isevenapi.xyz
24

Incoming trademark lawsuit from iSeven, the API that tells you if a number is seven or not

If anyone wants a more efficient local version for php:

function isEven(int $number): bool
{
    ${1} = false;
    ${2} = true;

    while ($number > 2) {
        $number -= 2;
    }

    return $$number;
}

Edit: Now with support for large numbers!

function isEven(int|string $number): bool
{
    ${1} = false;
    ${2} = true;

    while (bccomp($number, 2) === 1) {
        $number = bcsub($number, 2);
    }

    $number = (int) $number;
    return $$number;
}

Edit 2: someone asked for an ad-supported version, here you go!

function isEven(int|string $number): bool
{
    ${1} = false;
    ${2} = true;

    while (bccomp($number, 2) === 1) {
        error_log('Buy isEvenCoin, the hottest new cryptocurrency!');
        $number = bcsub($number, 2);
    }

    $number = (int) $number;
    return $$number;
}

Side note, no more suggestions please, this is getting quite long.

I fucking love that you managed to use var-vars in a completely key and necessary manner.

But please do adhere to the API TOS and throw in an error_log('Buy isEvenCoin, the hottest new cryptocurrency!');

This looks pretty inefficient. You should manually unroll that loop to improve performance.

Oh, bummer, my number isn't supported by the free version:

https://api.isevenapi.xyz/api/iseven/8764389587485736749956772984692357867345989845699872561/

That's not even supported by the enterprise version. You're going to need a special agreement with the iseven people to support numbers like that

Easy workaround, just test the last digit. If it is even, the entire number is even, else odd.

That's preposterous! Next time you'll tell me the language I'm using has a builtin operator that test if a number can be divided by another!

Only way it could be better is if they threw "AI" in there somewhere.

With the new AI integration, you can get smart isEven results that return the correct answer 90% of the time and a more creative solution 20% of the time.

im glad that people are out there building the web services we truly need.

I love that it works and the ads are pretty good.

The errors are great https://api.isevenapi.xyz/api/iseven/1.5

Sadly it's not always accurate https://api.isevenapi.xyz/api/iseven/0 Edit: nevermind I'm an idiot

It's also greatly lacking in number support https://api.isevenapi.xyz/api/iseven/one

Is even states that it only returns true for even, passing in an odd number is technically unsupported.

I resent that there is a ruby developer included in there. isEven is not idiomatic naming. You should be using #even? from the standard library

Sorry sir, most JS developers don’t use standard library functions. We just use npm packages wherever possible.