mpstyle/plazy

Lazy data access library

dev-master 2016-08-06 07:38 UTC

Requires (Dev)

• phpunit/phpunit: 5.5.*

LGPL v3

• Michele Pagnin

README

plazy

Another functional library for PHP 7.

Quickstart

To use plazy in your projects install composer and add to your composer.json file:

"require": {
    "mpstyle/plazy": "0.2.3"
}

Or run:

composer require "mpstyle/plazy"

Sequence

The sequence class allows you to build up a computation out of smaller operations. It's similar to Java 8 Streams

Now we can try some of the following:

Sequence::sequence(1, 2, 3, 4)->filter(even); // lazily returns 2,4
Sequence::sequence(1, 2)->map(toString); // lazily returns "1", "2"
Sequence::sequence(1, 2, 3)->take(2); // lazily returns 1,2
Sequence::sequence(1, 2, 3)->drop(2); // lazily returns 3
Sequence::sequence(1, 2, 3)->tail(); // lazily returns 2,3
Sequence::sequence(1, 2, 3)->head(); // eagerly returns 1
Sequence::sequence(1, 3, 5)->find(even); // eagerly returns none()
Sequence::sequence(1, 2, 3)->contains(2); // eagerly returns true
Sequence::sequence(1, 2, 3)->toString(":"); // eagerly returns "1:2:3"

Option

Optional value - type-safe null

Functions

plazy provides some interfaces for functional uages, such as:

• F: to transform an object to another one.
• Predicate: to filter/select/match an object.
• Validator: to validate an object.

Developers

To run unit test, run in the root of the plazy project:

composer phptest