PHP code example of derheyne / laravel-list

    
        
<?php
require_once('vendor/autoload.php');

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

    

derheyne / laravel-list example snippets

use dhy\LaravelList\ListCollection;

$list = new ListCollection(['a', 'b', 'c']);

$list->filter(fn ($v) => $v !== 'b')->toJson();
// "[\"a\",\"c\"]"  -- a JSON array, even after filtering

$c = collect(['a', 'b', 'c'])->filter(fn ($v) => $v !== 'b');

$c->all();    // [0 => 'a', 2 => 'c']      -- gap at index 1
$c->toJson(); // {"0":"a","2":"c"}         -- JSON object, not array
$c[1];        // null                      -- unexpected

$list = (new ListCollection(['a', 'b', 'c']))->filter(fn ($v) => $v !== 'b');

$list->all();    // [0 => 'a', 1 => 'c']
$list->toJson(); // ["a","c"]
$list[1];        // 'c'

use dhy\LaravelList\ListCollection;

(new ListCollection(['a' => 1, 'b' => 2, 'c' => 3]))->all();
// [0 => 1, 1 => 2, 2 => 3]

(new ListCollection(collect([10 => 'x', 20 => 'y'])))->all();
// [0 => 'x', 1 => 'y']

ListCollection::make([1, 2, 3]);
ListCollection::wrap('single value');           // [0 => 'single value']
ListCollection::times(5, fn ($i) => $i * 2);    // [2, 4, 6, 8, 10]

list_of();                 // empty list
list_of([1, 2, 3]);        // [0 => 1, 1 => 2, 2 => 3]
list_of(1, 2, 3);          // [0 => 1, 1 => 2, 2 => 3]
list_of('hello');          // [0 => 'hello']
list_of([1, 2], [3, 4]);   // [0 => [1, 2], 1 => [3, 4]]

list_of(3, 1, 4, 1, 5)
    ->unique()
    ->sort()
    ->all();               // [0 => 1, 1 => 3, 2 => 4, 3 => 5]

$list = new ListCollection([10, 25, 30, 5, 15]);

$list->filter(fn ($v) => $v > 10);  // [0 => 25, 1 => 30, 2 => 15]
$list->reject(fn ($v) => $v > 20);  // [0 => 10, 1 => 5,  2 => 15]
$list->sort();                      // [0 => 5,  1 => 10, 2 => 15, 3 => 25, 4 => 30]
$list->unique();
$list->whereIn(/* … */);

$list = new ListCollection(['a', 'b', 'c', 'd']);

$list->forget(1);            // remove by index, re-indexes:        [a, c, d]
$list->forget([0, 2]);       // remove multiple indices at once
$list->pull(1);              // remove and return the value, re-indexes
$list->prepend('z');         // always adds to the beginning (the $key argument is ignored)
$list->push('x');
$list->shift();
$list->pop();
$list->splice(1, 1, ['X']);  // remove and replace, re-indexes

$list = new ListCollection(['a', 'b', 'c']);

$list[] = 'd';        // append:                  [a, b, c, d]
$list[1] = 'B';       // replace index 1:         [a, B, c, d]
$list[4] = 'e';       // index == count, append:  [a, B, c, d, e]
$list[99] = 'z';      // out of range,    append: [a, B, c, d, e, z]
$list[-1] = 'q';      // negative,        append
$list['key'] = 'x';   // string key,      append

$list = new ListCollection([1, 2, 3]);

$list->map(fn ($v) => $v * 2);          // returns a new ListCollection
$list->transform(fn ($v) => $v * 10);   // mutates in place

$list->slice(1, 2);
$list->reverse();
$list->flatten();
$list->collapse();
$list->flatMap(fn ($v) => [$v, $v]);
$list->merge([4, 5, 6]);
$list->concat([7, 8]);
$list->diff([2]);
$list->intersect([1, 3]);
$list->chunk(2);                                   // ListCollection of ListCollections
$list->partition(fn ($v) => $v > 1);               // [ListCollection, ListCollection]

$list = new ListCollection(['a', 'b', 'c']);

$list->pull(1);                          // 'b';   list becomes [a, c]
$list->pull(99, 'fallback');             // 'fallback'
$list->pull(99, fn () => expensive());   // closure only runs on miss

$list = new ListCollection([
    ['name' => 'Alice', 'age' => 30],
    ['name' => 'Bob',   'age' => 25],
]);

$list->pluck('name')->all(); // [0 => 'Alice', 1 => 'Bob']

$list = new ListCollection([1, 2, 3]);
$list->filter(fn ($v) => $v > 1)->toJson(); // "[2,3]"

// A standard Collection produces an object after the same filter:
collect([1, 2, 3])->filter(fn ($v) => $v > 1)->toJson(); // "{\"1\":2,\"2\":3}"

$grouped = collect($list->all())->groupBy('category');