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Where and why do I have to put the “template” and “typename” keywords?
... my C++11 answer)
In order to parse a C++ program, the compiler needs to know whether certain names are types or not. The following example demonstrates that:
t * f;
How should this be parsed? For many languages a compiler doesn't need to know the meaning of a name in order to parse and basicall...
Why does pthread_cond_wait have spurious wakeups?
...gt;situations where a wait times out just as a signal arrives?
> You know, I wonder if the designers of pthreads used logic like this:
> users of condition variables have to check the condition on exit anyway,
> so we will not be placing any additional burden on them if we allow
> s...
Should I use char** argv or char* argv[]?
... array, but instead it will be a pointer to the respective element type.
Now, if you try to pass an array, what is passed instead is a pointer to the arrays' first element.
Excursion: Functions as parameters
For completion, and because I think this will help you better understand the matter, le...
How can I update npm on Windows?
...
As of now (November 2014) this is will get you the latest node (0.10.33) but not the latest npm -- you will get npm 1.4.28. To update to a modern (2.x.x) npm on Windows, follow the instructions here: github.com/npm/npm/wiki/Troubl...
Get/pick an image from Android's built-in Gallery app programmatically
...
// this is the action code we use in our intent,
// this way we know we're looking at the response from our own action
private static final int SELECT_PICTURE = 1;
private String selectedImagePath;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(saved...
How do I display an alert dialog on Android?
..._demo);
dialog.setTitle(R.string.dialog_title);
dialog.show();
}
Now create Layout XML dialog_demo.xml and create your UI/design. Here is a sample one I created for demo purposes:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com...
Why would you use Oracle database? [closed]
...out the cost of developers time working with Oracle. Most developers who know any other db hate Oracle, those that don't assume that all DB code and/or ORM tools are difficult to use.
If I started a business that I believed was going to scale to Amazon proportions I might consider NoSQL solutions,...
Why does ConcurrentHashMap prevent null keys and values?
...eature, which wasn't available back then (Java 5). You could use Optionals now, indeed.
– Bruno
Sep 18 '18 at 15:02
@A...
Detecting an undefined object property
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Blah, thousands of votes now. This is the worst possible way to do it. I hope passers-by see this comment and decide to check… ahem… other answers.
– Ry-♦
May 14 '14 at 3:05
...
How to search contents of multiple pdf files?
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oh that's cool, glad to know there are advantages to this even though it is much less obvious to most people wtf it is doing
– sjr
Oct 16 '13 at 4:30
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