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Difference between `set`, `setq`, and `setf` in Common Lisp?
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I would like to add to previous answers that setf is macro that call specific function depending on what was passed as its first argument.
Compare results of macro expansion of setf with different types of arguments:
(macroexpand '(setf a 1))
(macroexpand '(setf (car (list 3 2 1)) 1))
...
C++, Free-Store vs Heap
...nd delete use the free store, malloc and free use the heap; new and delete call the constructor and destructor, respectively, however malloc and free do not." Yet, you will often hear that the memory segments are really in the same area - however, that CAN be compiler specific, that is to say, it is...
iPhone app signing: A valid signing identity matching this profile could not be found in your keycha
...n the left side navigation.
Click "Launch Assistant"
create a new app ID - call it whatever you want. Just make sure it's unique enough to know that's the one you just created because the others you've been messing with all day will not be deleted from Apples Dev Center.
You should be able to follow...
Is there a difference between foo(void) and foo() in C++ or C?
...int f( unknown ) in C
Rationale: This is to avoid erroneous function calls (i.e., function calls with the wrong number or type of
arguments).
Effect on original feature: Change to semantics of well-defined feature. This feature was marked as “obsolescent” in C.
8.5.3 functions say...
Practical use of `stackalloc` keyword
...e arrays down, it's faster to allocate than a heap array, an it is automatically freed on method exit (heap allocated arrays are only deallocated when GC runs). Also by using stackalloc instead of a native allocator (like malloc or the .Net equivalent) you also gain speed and automatic deallocation ...
Get “Value” property in IGrouping
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The group implements IEnumerable<T> - In the general case, just call foreach over the group. In this case, since you need a List<T>:
list.Add(new DespatchGroup(group.Key, group.ToList());
share
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Redirect using AngularJS
...stion, but with this information the best that I can think is that you are calling the $location.path outside of the AngularJS digest.
Try doing this on the directive scope.$apply(function() { $location.path("/route"); });
...
Difference between knockout View Models declared as object literals vs functions
...computed observable can be bound to the appropriate value of this, even if called from a different scope.
With an object literal, you would have to do:
var viewModel = {
first: ko.observable("Bob"),
last: ko.observable("Smith"),
};
viewModel.full = ko.computed(function() {
return this.fi...
XmlSerializer: remove unnecessary xsi and xsd namespaces
...re.
});
}
// If you have other constructors, make sure to call the default constructor.
public MyTypeWithNamespaces(string label, int epoch) : this( )
{
this._label = label;
this._epoch = epoch;
}
// An element with a declared namespace different tha...
How do you share constants in NodeJS modules?
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Technically, const is not part of the ECMAScript specification. Also, using the "CommonJS Module" pattern you've noted, you can change the value of that "constant" since it's now just an object property. (not sure if that'll cascad...