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Multiple Indexes vs Multi-Column Indexes
... helps your data insert at the end of the index and not cause lots of disk IO and Page splits.
Secondly, if you are creating other indexes on your data and they are constructed cleverly they will be reused.
e.g. imagine you search a table on three columns
state, county, zip.
you sometimes sea...
Calling a function every 60 seconds
...
setInterval(function, delay)
That fires the function passed in as first parameter over and over.
A better approach is, to use setTimeout along with a self-executing anonymous function:
(function(){
// do some stuff
setTimeout(arguments.callee, 60000);
})();
that guarantees, that the n...
ScrollIntoView() causing the whole page to move
...was able to trace it to this call, which was missing the block : 'nearest' param.
– roskelld
Jul 18 '19 at 20:47
If on...
Use HTML5 to resize an image before upload
I have found a few different posts and even questions on stackoverflow answering this question. I am basically implementing this same thing as this post .
...
convert UIImage to NSData
...ata *data = UIImageJPEGRepresentation(myImageView.image, 0.8);
//The float param (0.8 in this example) is the compression quality
//expressed as a value from 0.0 to 1.0, where 1.0 represents
//the least compression (or best quality).
You can also put this code inside a GCD block and execute in a...
Which iomanip manipulators are 'sticky'?
...rectly assumed std::setw() would affect the stringstream for every insertion, until I changed it explicitly. However, it is always unset after the insertion.
...
Stopping python using ctrl+c
...on program is running will cause python to raise a KeyboardInterrupt exception. It's likely that a program that makes lots of HTTP requests will have lots of exception handling code. If the except part of the try-except block doesn't specify which exceptions it should catch, it will catch all exce...
What is the difference between max-device-width and max-width for mobile web?
...dth for development, although max-device-width is more accurate for production.
– John Magnolia
Mar 24 '13 at 20:15
31
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How can I search (case-insensitive) in a column using LIKE wildcard?
...nection->prepare($q);
$query->bindValue(1, "%$string%", PDO::PARAM_STR);
$query->execute();
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How to create a zip file in Java
...try e = new ZipEntry("folderName/mytext.txt");
You can find more information about compression with Java here.
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