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How to declare a type as nullable in TypeScript?
...Union type is in my mind best option in this case:
interface Employee{
id: number;
name: string;
salary: number | null;
}
// Both cases are valid
let employe1: Employee = { id: 1, name: 'John', salary: 100 };
let employe2: Employee = { id: 1, name: 'John', salary: null };
EDIT : For thi...
Empty set literal?
...types.html#set-types-set-frozenset says "non-empty sets ... can be created by placing a comma-separated list of elements within braces"
– S.Lott
May 25 '11 at 20:32
...
When should I use Inline vs. External Javascript?
...(Why performance? Because if the code is separate, it can easier be cached by browsers.)
JavaScript doesn't belong in the HTML code and if it contains special characters (such as <, >) it even creates problems.
Nowadays, web scalability has changed. Reducing the number of requests has become...
How to add “on delete cascade” constraints?
... 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...
Generate random string/characters in JavaScript
...milar to hex (base 16), base 36 uses letters to represent digits beyond 9. By converting a random number to base 36, you'll wind up with a bunch of seemingly random letters and numbers.
– Chris Baker
Jan 3 '13 at 20:45
...
How to avoid the “divide by zero” error in SQL?
...
In order to avoid a "Division by zero" error we have programmed it like this:
Select Case when divisor=0 then null
Else dividend / divisor
End ,,,
But here is a much nicer way of doing it:
Select dividend / NULLIF(divisor, 0) ...
Now the only proble...
Node.js on multi-core machines
...nx out-of-the-box is configured with all sorts of sane throttles. Node.js by default will continue accepting new connections in preference to serving existing ones until the box goes down... yes, the entire box; I crashed the kernel on a CentOS5 box by stress-testing Node (now THAT really isn't sup...
Sticky sidebar: stick to bottom when scrolling down, top when scrolling up
...I know it's an old question, but I casually found the same question posted by you in forum.jquery.com and one answer there (by@tucker973), suggested one nice library to make this and wanted to share it here.
It's called sticky-kit by @leafo
github proyect
webpage
simple example in jsFiddle (same ...
Convert timestamp to date in MySQL query
...SQL
Make the table with an integer timestamp:
mysql> create table foo(id INT, mytimestamp INT(11));
Query OK, 0 rows affected (0.02 sec)
Insert some values
mysql> insert into foo values(1, 1381262848);
Query OK, 1 row affected (0.01 sec)
Take a look
mysql> select * from foo;
+------...
How to handle AccessViolationException
... am calling throws a System.AccessViolationException, which is intercepted by Visual Studio. The odd thing is that I have wrapped my call in a try catch, which has handlers for AccessViolationException, COMException and everything else, but when Visual Studio (2010) intercepts the AccessViolationEx...