serhatozdal/php-java-optional

Java8 Optional 的完整实现，用于 PHP

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详细信息

github.com/serhatozdal/php-java-optional

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源代码

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1.0 2018-04-14 19:31 UTC

Requires

  • php: >=5.5.0

Requires (Dev)

Apache-2.0 03b772215cc3c1c96ff1b71369e77dbcea6b8929

  • Serhat ÖZDAL <serhatozdal.woop@gmail.com>

php optionaljava optionalphp java optional

This package is not auto-updated.

Last update: 2024-09-29 05:09:19 UTC

README

Java8 Optional 的完整实现，用于 PHP

Build Status Latest Stable Version Latest Unstable Version GitHub license

用法

// ofEmpty refers Optional#empty() in java
// It is renamed as ofEmpty() because of empty() is reserved by PHP 
Optional::ofEmpty()->isPresent(); // false

Optional::of("value")->orElse("elseValue"); // value
 
Optional::ofEmpty()->orElseThrow(function () { throw .... }); // throws exception

Optional::ofEmpty()->filter(function ($a) { return (int) $a; }); // function is not executed

Optional::of(5)->map(function ($a) { return $a * 2; })->get(); // returns 10

Optional::ofEmpty()->orElseGet(function () { return 10; }); // returns 10

安装

composer require serhatozdal/php-java-optional:1.0

资源