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Create an index on a huge MySQL production table without table locking
...If your using a version greater than 5.1 indices are created while the database is online. So not to worry you won't interrupt production system use."
This is ****FALSE**** (at least for MyISAM / InnoDB tables, which is what 99.999% of people out there use. Clustered Edition is different.)
Doing...
How do I create a dynamic key to be added to a JavaScript object variable [duplicate]
...push('example ' + 1);
}
Just don't forget that indexed arrays are zero-based so the first element will be jsArr[0], not jsArr[1].
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How to determine height of UICollectionView with FlowLayout
...to specify any height constraints for the collection view as it would vary based on the contents of the collection view.
Given below is the implementation:
@interface DynamicCollectionView : UICollectionView
@end
@implementation DynamicCollectionView
- (void) layoutSubviews
{
[super layout...
What is the equivalent to a JavaScript setInterval/setTimeout in Android/Java?
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The first answer is definitely the correct answer and is what I based this lambda version off of, which is much shorter in syntax. Since Runnable has only 1 override method "run()", we can use a lambda:
this.m_someBoolFlag = false;
new android.os.Handler().postDelayed(() -> this.m_so...
How to add a margin to a table row [duplicate]
... you specify display: block, at which point the width of the <tr> is based on content. Adding your suggested spacer <tr> with a set height works perfectly, though.
– baacke
Jan 22 '14 at 19:08
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Server is already running in Rails
... @CalamityAdam Rails usually runs on port 3000. He searches for processes based on that and gets only the PID from them (-t option) and then kills the process by that retrieved PID.
– totymedli
Oct 30 '19 at 16:44
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Why won't my PHP app send a 404 error?
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Another solution, based on @Kitet's.
header($_SERVER["SERVER_PROTOCOL"]." 404 Not Found");
header("Status: 404 Not Found");
$_SERVER['REDIRECT_STATUS'] = 404;
//If you don't know which web page is in use, use any page that doesn't exists
$ha...
MVC 4 Razor File Upload
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The Upload method's HttpPostedFileBase parameter must have the same name as the the file input.
So just change the input to this:
<input type="file" name="file" />
Also, you could find the files in Request.Files:
[HttpPost]
public ActionResult Uplo...
Does PHP have threading?
...now:
The object store's hash table where data is stored, thread safe, is
based on the TsHashTable shipped with PHP, by Zend.
The object store has a read and write lock, an additional access lock is provided for the TsHashTable such that if requires ( and it does, var_dump/print_r, direct access t...
What is the App_Data folder used for in Visual Studio?
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App_Data is essentially a storage point for file-based data stores (as opposed to a SQL server database store for example). Some simple sites make use of it for content stored as XML for example, typically where hosting charges for a DB are expensive.
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