No, you cannot declare recursive function types in C. Except inside a structure (or an union), it’s not possible to declare a recursive type in C. Now for the void * solution, void * is only guaranteed to hold pointers to objects and not pointers to functions. Being able to convert function pointers and void … Read more
Functions and function references (i.e. id-expressions of those types) decay into function pointers almost immediately, so the expressions func and f_ref actually become function pointers in your case. You can also call (***func)(5) and (******f_ref)(6) if you like. It may be preferable to use function references in cases where you want the &-operator to work … Read more
class TestSpeedRetrieval(webapp.RequestHandler): “”” Test retrieval times of various important records in the BigTable database “”” def __init__(self, cls): self.cls = cls def get(self): commandValidated = True beginTime = time() itemList = self.cls.all().fetch(1000) for item in itemList: pass endTime = time() self.response.out.write(“<br/>%s count=%d Duration=%s” % (self.cls.__name__, len(itemList), duration(beginTime,endTime)) TestRetrievalOfClass(Subscriber)
In this particular case, the calls are legal. Section 6.7.6.3p15 of the C standard spells out what makes two function type compatible (relevant part in bold): For two function types to be compatible, both shall specify compatible return types. Moreover, the parameter type lists, if both are present, shall agree in the number of parameters … Read more
Here is a little working completion of the simple example above. Although the thread is old, I think it is helpful to have a simple all-embracing guide for beginners, because I also had some problems before. function.cpp content (extern “C” used so that ctypes module can handle the function): extern “C” int square(int x) { … Read more
With the code you have provided test will still be in scope inside the callback. xhr will not be, other than xhr.responseText being passed in as data. Updated from comment: Assuming your code looks something like this: for (var test in testers) getFileContents(“hello”+test+”.js”, function(data) { alert(test); }); } As this script runs, test will be … Read more
You need to overwrite it as module.exports = function() {} Merely writing exports = function() {} creates a new local variables called exports and hides the exports variable living in module.exports
You would have probably tried: write-host “the new value is $obj1.value” and got corresponding output of the new value is System.Management.Automation.PSReference.value I think you did not notice the .value in the end of the output. In strings you have to do something like this while accessing properties: write-host “the new value is $($obj1.value)” Or use … Read more