rfc:intersection_types

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rfc:intersection_types [2016/04/27 17:30] levimrfc:intersection_types [2016/04/27 17:56] levim
Line 29: Line 29:
  
 // Fatal error: Uncaught TypeError: Argument 1 passed to RecordsToList() must be Countable and Traversable, array given, called in %s on line %d // Fatal error: Uncaught TypeError: Argument 1 passed to RecordsToList() must be Countable and Traversable, array given, called in %s on line %d
-echo RecordsToHtml(["Lennon", "McCartney", "Starr", "Harrison"]);+echo RecordsToList(["Lennon", "McCartney", "Starr", "Harrison"]);
  
 // Fine: // Fine:
-echo RecordsToHtml(new ArrayObject(["Lennon", "McCartney", "Starr", "Harrison"]));+echo RecordsToList(new ArrayObject(["Lennon", "McCartney", "Starr", "Harrison"]));
 // Output: // Output:
 // <ol> // <ol>
Line 58: Line 58:
 } }
 </PHP> </PHP>
 +
 +When union and intersection types are in the same expression they must be grouped with parenthesis (demonstrated above). The following is invalid:
 +
 +<PHP>
 +function RecordsToList(Array | Countable & Traversable): String {
 +    // ...
 +}
 +</PHP>
 +
  
 ===== Backward Incompatible Changes ===== ===== Backward Incompatible Changes =====
rfc/intersection_types.txt · Last modified: 2017/09/22 13:28 by 127.0.0.1