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How add “or” in switch statements?
...
By stacking each switch case, you achieve the OR condition.
switch(myvar)
{
case 2:
case 5:
...
break;
case 7:
case 12:
...
break;
...
}
...
What is a “Bitmap heap scan” in a query plan?
... to.
This is different from an index scan, where the index is visited row by row in order -- meaning a disk page may get visited multiple times.
Re: the question in your comment... Yep, that's exactly it.
An index scan will go through rows one by one, opening disk pages again and again, as many...
django template display item value or empty string
... imageUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454...
Splitting on last delimiter in Python string?
...d')
Both methods start splitting from the right-hand-side of the string; by giving str.rsplit() a maximum as the second argument, you get to split just the right-hand-most occurrences.
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imp...
How to change owner of PostgreSql database?
...to admin database and update DB ownership:
psql
postgres=# REASSIGN OWNED BY old_name TO new_name;
This is a global equivalent of ALTER DATABASE command provided in Frank's answer, but instead of updating a particular DB, it change ownership of all DBs owned by 'old_name'.
The next step is to up...
What is the different between 'Auto' and '*' when setting width/height for a grid column?
...he elements within it require.
The width of * sized columns is calculated by allocating space for the Auto, and fixed width columns, and then dividing up the remaining space. So if there's only one * sized column, it will get all the remaining space, if there were two they would get half each, etc....
Select all columns except one in MySQL?
..._tb ENGINE=MEMORY (SELECT * FROM orig_tb); , otherwise it's saved to disk by default, and survives a server restart. (thanks)
– gregn3
Jul 11 '19 at 18:00
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Access Container View Controller from Parent iOS
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exactly, it is called before viewDidLoad. By the time viewDidLoad is reached, the parent and child have been connected and [self childViewControllers] in the parent will return an array of all the child controllers (see rdelmar's answer below).
–...
What are the differences between -std=c++11 and -std=gnu++11?
...s because I don't recommend doing anything that isn't specifically defined by the Standard... but even then, "violates" is a strange and loaded term, when a lot of these extensions are, to use Standardese, just implementation-defining or specifying things that the Standard is silent on - or perhaps ...
What is the _references.js used for?
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In my experience, usage by Visual Studio (2017) has grown beyond just intellisense. I found that if, for example, jquery-2.2.2.min.js was not mentioned in _references.js, then it wouldn't get deployed and there would be a run time failure using jqu...