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Return empty cell from formula in Excel
...a by changing SomeRange to Range("MyRange"). To set a name for your cells, select the cells, click Define Name on the Formulas tab of the ribbon, and enter "MyRange" in the Name field. (And of course you could replace MyRange with anything you want.)
– devuxer
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PHP + MySQL transactions examples
..._connect("localhost","Dude1", "SuperSecret") or die(mysql_error());
mysql_select_db("bedrock") or die(mysql_error());
$query = "INSERT INTO employee (ssn,name,phone) values ('123-45-6789','Matt','1-800-555-1212')";
begin(); // transaction begins
$result = mysql_query($query);
if(!$result){
...
How do I run multiple instances of Android Studio
...ultiple instances of Android Studio? A second instance is launched if you select "File\New Project", but "File\Open" and "File\Reopen" does not create a second instance.
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Regex replace uppercase with lowercase letters
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You may:
Find: (\w)
Replace With: \L$1
Or select the text, ctrl+K+L.
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What are five things you hate about your favorite language? [closed]
...ncludes syntax style.
...And a few bonus reasons to hate it, at no extra charge
the WHERE clause goes last, making it easy to prematurely execute an UPDATE or DELETE, destroying the whole table. Instead, the WHERE should go somewhere up front.
It's difficult to implement relational division.
I...
What are naming conventions for MongoDB?
... singular (collections are plural)
MongoDB states a nice example:
To select a database to use, in the mongo shell, issue the use <db>
statement, as in the following example:
use myDB
use myNewDB
Content from: https://docs.mongodb.com/manual/core/databases-and-collections/#...
Auto-expanding layout with Qt-Designer
...your widget/dialog/window (not the QVBoxLayout, but the parent widget) and select Lay Out -> Lay Out in a Grid from the bottom of the context-menu. The QVBoxLayout should now stretch to fit the window and will resize automatically when the entire window is resized.
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JavaScript: Upload file
... type="file" onchange="SavePhoto(this)" >
<br><br>
Before selecting the file open chrome console > network tab to see the request details.
<br><br>
<small>Because in this example we send request to https://stacksnippets.net/upload/image the response code will ...
Why there is no ForEach extension method on IEnumerable?
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Couldn't you just use Select instead of your Apply method? It seems to me that applying an action to each element and yielding it is exactly what Select does. E.g. numbers.Select(n => n*2);
– rasmusvhansen
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Is there any performance gain in indexing a boolean field?
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It depends on the actual queries and the selectivity of the index/query combination.
Case A: condition WHERE isok = 1 and nothing else there:
SELECT *
FROM tableX
WHERE isok = 1
If the index is selective enough (say you have 1M rows and only 1k have isok = 1), ...