Short Lambda Syntax

lambda.php

<?php

$names = ['Alice', 'Bob'];

// PHP Closures
$greetings = array_map(
    function($x) {
        return "Hello $x";
    }, $names);

// HHVM's short-lambda version
$greetings = array_map($x ==> "Hello $x", $names);

Perhaps the parameter into ==> can be aliased as ~ ?
And with PSR7 can we reduce the request to $__ ?

<?php

$result = false;

$procedure = [
    'minifiy();',
    'reduce();',
    'squish()',
];

foreach ($procedure as $call) {
    $result .==> eval($call);
}

return $result;

Or you can do the same thing, without having to expose your codebase to eval:

<?php

$result = false;

$procedure = [
    'minifiy',
    'reduce',
    'squish',
];

foreach ($procedure as $call) {
    $result .==> $call();
}

return $result;