每天laravel-20160812|Container-15

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/** * Resolve the given type from the container. * * @param  string  $abstract * @param  array   $parameters * @return mixed */ // get the given type from the containerpublic function make($abstract, array $parameters = []){// this function name "make" like compile c file to binary file in the linux    $abstract = $this->getAlias($this->normalize($abstract));    // first get the alias as the new name    // If an instance of the type is currently being managed as a singleton we'll    // just return an existing instance instead of instantiating new instances    // so the developer can keep using the same objects instance every time.    if (isset($this->instances[$abstract])) {        return $this->instances[$abstract];    }// like normal method // if it is exist ,we will return it, that ok;    $concrete = $this->getConcrete($abstract);// concrete like create it done    // We're ready to instantiate an instance of the concrete type registered for    // the binding. This will instantiate the types, as well as resolve any of    // its "nested" dependencies recursively until all have gotten resolved.    if ($this->isBuildable($concrete, $abstract)) {// isBuildable        $object = $this->build($concrete, $parameters);// check it is can be Builda    } else {        $object = $this->make($concrete, $parameters);    }    // If we defined any extenders for this type, we'll need to spin through them    // and apply them to the object being built. This allows for the extension    // of services, such as changing configuration or decorating the object.    foreach ($this->getExtenders($abstract) as $extender) {        $object = $extender($object, $this);    }// to though , a extender done is too trouble    // If the requested type is registered as a singleton we'll want to cache off    // the instances in "memory" so we can return it later without creating an    // entirely new instance of an object on each subsequent request for it.    if ($this->isShared($abstract)) {        $this->instances[$abstract] = $object;    }// get the instance from the "memory"    $this->fireResolvingCallbacks($abstract, $object);    $this->resolved[$abstract] = true;    return $object;}// in the last we will found it is a compatible way to get you want object./** * Get the concrete type for a given abstract. * * @param  string  $abstract * @return mixed   $concrete */protected function getConcrete($abstract){// get a Concrete type for a abstract    if (! is_null($concrete = $this->getContextualConcrete($abstract))) {        return $concrete;    }// if you can get it ,then return it // otherwise see next    // If we don't have a registered resolver or concrete for the type, we'll just    // assume each type is a concrete name and will attempt to resolve it as is    // since the container should be able to resolve concretes automatically.    if (! isset($this->bindings[$abstract])) {        return $abstract;    }// return it back    return $this->bindings[$abstract]['concrete'];}//last we will binding it

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