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How to get a list of column names on Sqlite3 database?
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PRAGMA table_info(table_name);
will get you a list of all the column names.
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What is the difference between single and double quotes in SQL?
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Single quotes are used to indicate the beginning and end of a string in SQL. Double quotes generally aren't used in SQL, but that can vary from database to database.
Stick to using single quotes.
That's the primary use anyway. You can use single quotes for a column alias — where yo...
How to timeout a thread
...current.TimeoutException;
public class Test {
public static void main(String[] args) throws Exception {
ExecutorService executor = Executors.newSingleThreadExecutor();
Future<String> future = executor.submit(new Task());
try {
System.out.println("Start...
How to extract the file name from URI returned from Intent.ACTION_GET_CONTENT?
...on to just extract the file name (assuming "this" is an Activity):
public String getFileName(Uri uri) {
String result = null;
if (uri.getScheme().equals("content")) {
Cursor cursor = getContentResolver().query(uri, null, null, null, null);
try {
if (cursor != null && curso...
How to save a Python interactive session?
...ntly using Python's interpreter to work with databases, files, etc -- basically a lot of manual formatting of semi-structured data. I don't properly save and clean up the useful bits as often as I would like. Is there a way to save my input into the shell (db connections, variable assignments, lit...
get the latest fragment in backstack
...ackStackEntry backEntry = getFragmentManager().getBackStackEntryAt(index);
String tag = backEntry.getName();
Fragment fragment = getFragmentManager().findFragmentByTag(tag);
You need to make sure that you added the fragment to the backstack like this:
fragmentTransaction.addToBackStack(tag);
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Get the subdomain from a URL
...e('super.duper.domain.co.uk');
$result->getSubdomain(); // will return (string) 'super.duper'
$result->getSubdomains(); // will return (array) ['super', 'duper']
$result->getHostname(); // will return (string) 'domain'
$result->getSuffix(); // will return (string) 'co.uk'
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jQuery posting valid json in request body
...rding to the jQuery Ajax docs , it serializes data in the form of a query string when sending requests, but setting processData:false should allow me to send actual JSON in the body. Unfortunately I'm having a hard time determining first, if this is happening and 2nd what the object looks like t...
Build tree array from flat array in javascript
I have a complex json file that I have to handle with javascript to make it hierarchical, in order to later build a tree.
Every entry of the json has :
id : a unique id,
parentId : the id of the parent node (which is 0 if the node is a root of the tree)
level : the level of depth in the tree
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Error starting jboss server
I've just finished re-installing my OS, and as always install and test standard tools which I use, and now I get this error like never before when I tried to start Jboss 5 from eclipse, its quite big exeption :
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