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Should we pass a shared_ptr by reference or by value?
...er and prettier. Seriously. Value* is short and readable, but it's bad, so now my code is full of const shared_ptr<Value>& and it's significantly less readable and just... less tidy. What used to be void Function(Value* v1, Value* v2, Value* v3) is now void Function(const shared_ptr<Val...
Merging 2 branches together in GIT
... A
$ git checkout A
# hack hack
$ git commit -am "commit on branch A"
so now there are three separate branches (namely A B and C) with different heads
to get the changes from B and C back to A, checkout A (already done in this example) and then use the merge command:
# create an octopus merge
$ ...
ListView item background via custom selector
...ppen, I don't even want to talk about it, if you have such a problem, you know them.
Now, If you want to have a listview with different states and 9-patch drawables (it would work with any drawables and colors, I think) you have to do 2 things:
Set the selector for the items in the list.
Get rid ...
What is a good pattern for using a Global Mutex in C#?
...owEveryoneRule =
new MutexAccessRule( new SecurityIdentifier( WellKnownSidType.WorldSid
, null)
, MutexRights.FullControl
, AccessControlType.Allow
);
var s...
What is the difference between a URI, a URL and a URN?
...hat URN to a URL and download the book for you.
Do any browsers actually know how to fetch documents by URN?
Not that I know of, but modern web browser do implement the data URI scheme.
Does the difference between URL and URI have anything to do with whether it is relative or absolute?
No. Bot...
When to use virtual destructors?
...Here, you'll notice that I didn't declare Base's destructor to be virtual. Now, let's have a look at the following snippet:
Base *b = new Derived();
// use b
delete b; // Here's the problem!
Since Base's destructor is not virtual and b is a Base* pointing to a Derived object, delete b has undefin...
What's the fundamental difference between MFC and ATL?
... them yet.
[Edit embellishment: I did not work at Microsoft, so I don't know if Office was ever built on MFC, but I think the answer is no. Back in Win 3.1, Win 95 days, Office UI team would invent new controls, package them up in libraries, then the Windows and MFC teams would incorporate wrappe...
custom listview adapter getView method being called multiple times, and in no coherent order
... ListView to measure a few children out of the adapter at layout time, to know how big it should be. This is what provides ListView with the convertViews you see passed to getView() even before you scroll.
share
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Why is super.super.method(); not allowed in Java?
...- RedItems can always be confident that the items it contains are all red. Now suppose we were able to call super.super.add():
public class NaughtyItems extends RedItems
{
@Override
public void add(Item item)
{
// I don't care if it's red or not. Take that, RedItems!
sup...
Checking if form has been submitted - PHP
...
Ideally now you should use if (null !== (filter_input(INPUT_POST, 'macaddress'))){ which gets you in the habit of using filter_input
– depicus
Feb 20 '15 at 9:46
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