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How to delete duplicate rows in SQL Server?
...TE from search
where id not in (
select min(id) from search
group by url
having count(*)=1
union
SELECT min(id) FROM search
group by url
having count(*) > 1
)
share
|
impr...
How to discard local changes in an SVN checkout?
...se a directory name that does not exist, here using subdirectory TMP/).
$ url=$(svn info . | awk '/^URL/ {print $2}')
$ svn checkout "$url" TMP
Using that pristine svn checkout as a basis, init a git repository, ignoring .svn directories; commit everything in svn head to your temporary git reposit...
What are sessions? How do they work?
...st, you need a way to store user data between HTTP requests.
Cookies or URL parameters ( for ex. like http://example.com/myPage?asd=lol&boo=no ) are both suitable ways to transport data between 2 or more request.
However they are not good in case you don't want that data to be readable/editab...
How to include JavaScript file or library in Chrome console?
...s/script.js'); then it's relative to the document but it can load absolute urls as well, eg. $.getScript('https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.6.0/underscore.js');
– rsp
May 16 '14 at 0:38
...
Is it possible to prevent an NSURLRequest from caching data or remove cached data following a reques
On iPhone, I perform a HTTP request using NSURLRequest for a chunk of data. Object allocation spikes and I assign the data accordingly. When I finish with the data, I free it up accordingly - however instruments doesn't show any data to have been freed!
...
How does facebook, gmail send the real time notification?
... short, I will use jQuery:
function pollTask() {
$.ajax({
url: '/api/Polling',
async: true, // by default, it's async, but...
dataType: 'json', // or the dataType you are working with
timeout: 10000, // IMPORTANT! this is a 10 second...
Set a persistent environment variable from cmd.exe
...PCA_API_KEY_ID=key_id
set APCA_API_SECRET_KEY=secret_key
set APCA_API_BASE_URL=https://paper-api.alpaca.markets
:: setx also for other windows and processes going forward
setx APCA_API_KEY_ID %APCA_API_KEY_ID%
setx APCA_API_SECRET_KEY %APCA_API_SECRET_KEY%
setx APCA_API_BASE_URL %APCA_API_BAS...
How can I sanitize user input with PHP?
...{
$flags = NULL;
switch($type)
{
case 'url':
$filter = FILTER_SANITIZE_URL;
break;
case 'int':
$filter = FILTER_SANITIZE_NUMBER_INT;
break;
case 'float':
$filter = FILT...
How to post JSON to a server using C#?
...orking is:
var httpWebRequest = (HttpWebRequest)WebRequest.Create("http://url");
httpWebRequest.ContentType = "application/json";
httpWebRequest.Method = "POST";
using (var streamWriter = new StreamWriter(httpWebRequest.GetRequestStream()))
{
string json = "{\"user\":\"test\"," +
...
How to access the GET parameters after “?” in Express?
...e the value I'm looking for.
req.params refers to items with a ':' in the URL and req.query refers to items associated with the '?'
Example:
GET /something?color1=red&color2=blue
Then in express, the handler:
app.get('/something', (req, res) => {
req.query.color1 === 'red' // tru...