PHP code example of decodelabs / tightrope

1. Go to this page and download the library: Download decodelabs/tightrope library. Choose the download type require.

2. Extract the ZIP file and open the index.php.

3. Add this code to the index.php. 
    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

decodelabs / tightrope example snippets


namespace DecodeLabs\Tightrope;

interface Nullable {
    public function isNullable(): bool;
}


namespace DecodeLabs\Tightrope\Manifest;

use DecodeLabs\Tightrope\Nullable as StaticNullable;

interface Nullable extends StaticNullable {
    public function setNullable(bool $flag): static;
}


namespace My\Project;

use DecodeLabs\Exceptional;
use DecodeLabs\Tightrope\Manifest\Nullable;
use DecodeLabs\Tightrope\Manifest\NullableTrait;

class MyClass implements Nullable {

    use NullableTrait;

    public function doSomething(?string $value): void {
        if(
            !$this->isNullable() &&
            $value === null
        ) {
            throw Exceptional::InvalidArgument(
                message: 'Value cannot be null'
            );
        }

        // ...
    }
}

$myObject = new MyClass();

$myObject->setNullable(true);
$myObject->doSomething(null); // Fine

$myObject->setNullable(false);
$myObject->doSomething(null); // Not fine