rfc:operator_functions

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rfc:operator_functions [2017/09/09 00:17] – clarify ajfrfc:operator_functions [2017/09/09 21:32] – include partial apply sample ajf
Line 62: Line 62:
 <code php> <code php>
 // Select only the positive numbers // Select only the positive numbers
-$positiveSubset = array_filters($numbers, partialApply('>', 0));+$positiveSubset = array_filter($numbers, partialApply('<', 0));
 </code> </code>
 +
 +An example working partial application implementation would be:
 +
 +<file php partialApply.php>
 +function partialApply(callable $c, ...$args) {
 +    return function (...$args2) use ($c, $args) {
 +        return $c(...$args, ...$args2);
 +    };
 +}
 +</file>
  
 ==== Detail ==== ==== Detail ====
Line 153: Line 163:
 The existing operators themselves behave the same as ever. The existing operators themselves behave the same as ever.
  
-Quoting function names in function calls is not new, it is a consequence of [[rfc:uniform_variable_syntax|Uniform Variable Syntax]].+Being able to quote function names in function calls (e.g. <php>'+'(1, 1)</php>) is not a new idea introduced by this RFC, it has been possible since [[rfc:uniform_variable_syntax|Uniform Variable Syntax]] in PHP 7.0.
  
 ===== Future Scope ===== ===== Future Scope =====
rfc/operator_functions.txt · Last modified: 2017/09/22 13:28 by 127.0.0.1

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