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Which version of PostgreSQL am I running?
...n't install it myself. I access the databases using Navicat or phpPgAdmin (if that helps). I also don't have shell access to the server running the database.
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static linking only some libraries
How can I statically link only a some specific libraries to my binary when linking with GCC?
8 Answers
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Should I commit or rollback a read transaction?
I have a read query that I execute within a transaction so that I can specify the isolation level. Once the query is complete, what should I do?
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Firefox session cookies
...like you had never closed the browser.
This makes sense in the sense that if your browser crashed you get right back to where you were, but is a little disconcerting for web devs used to session cookies getting cleared. I've got some old session cookies from months ago that were set by sites I alwa...
Android - get children inside a View?
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If you not only want to get all direct children but all children's children and so on, you have to do it recursively:
private ArrayList<View> getAllChildren(View v) {
if (!(v instanceof ViewGroup)) {
Array...
Why is char[] preferred over String for passwords?
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Strings are immutable. That means once you've created the String, if another process can dump memory, there's no way (aside from reflection) you can get rid of the data before garbage collection kicks in.
With an array, you can explicitly wipe the data after you're done with it. You can ov...
How does type Dynamic work and how to use it?
... describing the generated implementation. In fact, one can implement four different methods:
selectDynamic - allows to write field accessors: foo.bar
updateDynamic - allows to write field updates: foo.bar = 0
applyDynamic - allows to call methods with arguments: foo.bar(0)
applyDynamicNamed - allo...
How exactly does the android:onClick XML attribute differ from setOnClickListener?
...d" attribute.
Those two code snippets are equal, just implemented in two different ways.
Code Implementation
Button btn = (Button) findViewById(R.id.mybutton);
btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
myFancyMethod(v);
}
});
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Resize UIImage by keeping Aspect ratio and width
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The method of Srikar works very well, if you know both height and width of your new Size.
If you for example know only the width you want to scale to and don't care about the height you first have to calculate the scale factor of the height.
+(UIImage*)imageWith...
Is there any reason to use a synchronous XMLHttpRequest?
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I think they might become more popular as HTML 5 standards progress. If a web application is given access to web workers, I could foresee developers using a dedicated web worker to make synchronous requests for, as Jonathan said, to ensure one request happens before another. With the current ...