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Empty set literal?
... You mean there is no literal syntax for the empty set? Or for sets in general?
– Johan Råde
May 25 '11 at 20:23
15
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How to Join to first row
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SELECT Orders.OrderNumber, LineItems.Quantity, LineItems.Description
FROM Orders
JOIN LineItems
ON LineItems.LineItemGUID =
(
SELECT TOP 1 LineItemGUID
FROM LineItems
WHERE OrderID = Orders.OrderI...
How to play a notification sound on websites?
When a certain event occurs, I want my website to play a short notification sound to the user.
10 Answers
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Laravel Check If Related Model Exists
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In php 7.2+ you can't use count on the relation object, so there's no one-fits-all method for all relations. Use query method instead as @tremby provided below:
$model->relation()->exists()
generic solution working...
How do I install ASP.NET MVC 5 in Visual Studio 2012?
Is there a way to install ASP.NET MVC 5 in Visual Studio 2012?
11 Answers
11
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Why do most fields (class members) in Android tutorial start with `m`?
... it stand for? I'm a PHP developer. "We" use first letters of variables as indication of type, like 'b' for boolean, 'i' for integer and so on.
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Disable JavaScript error in WebBrowser control
I am developing a windows application with a WebBrowser control that navigates to a sharepoint site.
My problem is that i am getting JavaScript error.
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How can I perform a `git pull` without re-entering my SSH password?
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Have a look at this link https://help.github.com/articles/working-with-ssh-key-passphrases/
But I don’t want to enter a long passphrase every time I use the key!
Neither do I! Thankfully, there’s a nifty little tool called
ssh-agen...
How to prevent a jQuery Ajax request from caching in Internet Explorer?
How do I prevent a jQuery Ajax request from caching in Internet Explorer?
6 Answers
6
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python list by value not by reference [duplicate]
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As answered in the official Python FAQ:
b = a[:]
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