title: "Job" description: "Job." lead: "Job." date: 2020-10-13T15:21:01+02:00 lastmod: 2020-10-13T15:21:01+02:00 draft: false images: [] menu: docs: parent: "getting-started" weight: 10 toc: true

Job

When using Flow, you can pass Closure or JobInterface, it's useful when you want to specialize your Job, that come with dependency injection.

ClosureJob

ClosureJob simplifies job handling by allowing the use of closures or custom job classes, providing a versatile solution for managing jobs in your application.

YJob

The YJob class defines the Y combinator to recursively apply the job function, making it particularly useful in scenarios where you need to perform recursive tasks without explicitly writing recursive functions.

LambdaJob

The LambdaJob class provides a way to evaluate lambda calculus expressions in PHP. It implements the Flow\JobInterface and allows you to:

• Parse and evaluate lambda expressions
• Work with functional programming concepts directly in PHP
• Transform lambda calculus notation into executable PHP code

Example usage:

<?php

$job = new LambdaJob('λx.x + 1');
$result = $job(5); // Returns 6

// Using with multiple parameters
$job = new LambdaJob('λx.λy.x + y');
$result = $job(5)(3); // Returns 8

The LambdaJob is particularly useful when you want to:

• Express mathematical functions in lambda calculus notation
• Work with pure functions in a functional programming style
• Create composable function transformations

For more complex examples and detailed implementation, refer to the Lambda Interpreter article.

Make your own Job

You can make your custom Job by implementing Flow\JobInterface.