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Transaction isolation levels relation with locks on table
...B just executes a SELECT statement to read data. C reads and updates data. All these process work on the same table T.
READ UNCOMMITTED - no lock on the table. You can read data in the table while writing on it. This means A writes data (uncommitted) and B can read this uncommitted data and use it...
Yes/No message box using QMessageBox
...ult button with an extra argument (Qt "chooses a suitable default automatically" if you don't or specify QMessageBox::NoButton).
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MySql export schema without data
...ered May 30 '11 at 11:09
onteria_onteria_
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Has Facebook sharer.php changed to no longer accept detailed parameters?
...pers are encouraged to use the more modern Share Dialog, which can perform all of the same functions as these older dialogs, but can additionally publish custom Open Graph stories without requiring Facebook Login. developers.facebook.com/docs/sharing/reference/share-dialog
– R...
X-Frame-Options Allow-From multiple domains
...olicy header, which along many other policies can white-list what URLs are allowed to host your page in a frame, using the frame-ancestors directive.
frame-ancestors supports multiple domains and even wildcards, for example:
Content-Security-Policy: frame-ancestors 'self' example.com *.example.net ...
What is pseudopolynomial time? How does it differ from polynomial time?
...ng TSP takes time O(n · n!), which isn't polynomial time.
These runtimes all refer to some variable n that tracks the size of the input. For example, in selection sort, n refers to the number of elements in the array, while in TSP n refers to the number of nodes in the graph. In order to standardi...
Click Event on UIImageView programmatically in ios
...wift 3
On UIImageView enable UserInterAction
override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
super.touchesEnded(touches, with: event)
if let touch = touches.first {
if touch.view == self.imgVwPostPreview { //image View property
...
Creating temporary files in Android
...
This is what I typically do:
File outputDir = context.getCacheDir(); // context being the Activity pointer
File outputFile = File.createTempFile("prefix", "extension", outputDir);
As for their deletion, I am not complete sure either. Since I ...
How do I view events fired on an element in Chrome DevTools?
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what if all events point to minified jquery i dont care about, how do i reach the function that uses that jquery.
– Muhammad Umer
Oct 1 '14 at 19:15
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How do I build a numpy array from a generator?
... lists. This is necessary so that space for each item can be consecutively allocated in memory. Consecutive allocation is the key feature of numpy arrays: this combined with native code implementation let operations on them execute much quicker than regular lists.
Keeping this in mind, it is techni...