If removing audio files from one project version and disk, another project version (from within the same project folder) may loose audio files actually used in said version… Hmmm? How are we expected to be able to remove unused and unreferenced audio files from disk now? Especially when we have multiple versions of each project? Have had no problem with a “fair amount” of audio files involved… Never used scores though. Note that using an unbounded generic type-check works as expected - a type check against a generic type, without specifying type arguments, checks the base type but ignores the type arguments.Īs demonstrated by the last two examples, type-checking also works on abstract types - that is, an instance of Box is an instance of Box because Cat implements Feline and likewise, Box is an instance of Box because Hat extends HeadGear.I don’t know if it will come back, but I can tell you that it was not stable under certain circumstances, especially when there are 1000s of files and scores of projects. The following demonstrates the proposed syntax for a generic class:Ĭlass Entry $hat_box = new Box ( ) $cat_box = new Box ( ) var_dump ( $hat_box instanceof Box ) // => (bool) true var_dump ( $cat_box instanceof Box ) // => (bool) true var_dump ( $cat_box instanceof Box ) // => (bool) true var_dump ( $cat_box instanceof Box ) // => (bool) false var_dump ( $cat_box instanceof Box ) // => (bool) true var_dump ( $hat_box instanceof Box ) // => (bool) true (Type arguments in static methods are allowed, and function the same as type arguments in functions.) The use of class-level type aliases in a static method declaration (or static method body) are not permitted, since there is no calling context ( $this) and therefore no way to resolve the type aliases.
Within the scope of a given generic type declaration, a type alias may be used in place of an actual type hint, in any instance method declaration or expression body - this includes instance method return-types, and various common expressions in the body of an instance method, including the new statement and references to static members. a supertype of permitted type arguments for a given type parameter, which may be indicated by the use of the word is and a type-hint following the alias.Ī type parameter may include a default type-hint, which will be applied in the absence of a given type-hint, indicated by an = sign folled by a type-hint, at the end of the type parameter. Note that generic versions of the standard (SPL) collection types in PHP is currently beyond the scope of this RFC.Īlso note that, while the syntax proposed by this specification may be similar to that of Hack/HHVM, compatibility with Hack is not a stated objective.Ī type (class/trait/interface) declaration is considered generic when the declaration includes one or more type parameter aliases, enclosed in angle brackets, immediately following the type-name.Ī type parameter alias may optionally include an upper bound, e.g.
#Cleanx function php code#
Generics will provide stronger type-safety, when required, may enable new run-time optimizations, and substantial benefits in terms of static analysis in offline source code QA tools, as well as design-time inspections and auto-completion in modern IDEs. Generics are an important step towards PHP maturing as a gradually-typed language - a direction in which PHP is already moving, with the addition of scalar type-hints, and return type-hints, in PHP 7. Generic type relationships are already possible in PHP, as it is in most dynamic languages - but such type relationships presently cannot be declared or checked, and, at this time, can't even be documented, e.g. Generics enable developers to create a whole family of declarations using a single generic declaration - for example, a generic collection-type declaration Collection induces a declaration for any entity-type T, which negates the need to implement a dedicated collection-type for every entity-type, reducing the need for boilerplate code and duplication. This RFC proposes the addition of generic types and functions to PHP.
0 kommentar(er)
