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How to have an automatic timestamp in SQLite?
...
Just declare a default value for a field:
CREATE TABLE MyTable(
ID INTEGER PRIMARY KEY,
Name TEXT,
Other STUFF,
Timestamp DATETIME DEFAULT CURRENT_TIMESTAMP
);
However, if your INSERT command explicitly sets this field to NULL, it will be set to NULL.
...
Good examples of Not a Functor/Functor/Applicative/Monad?
...r, but not Applicative:
I don't have a good example. There is Const, but ideally I'd like a concrete non-Monoid and I can't think of any. All types are basically numeric, enumerations, products, sums, or functions when you get down to it. You can see below pigworker and I disagreeing about wheth...
Query an XDocument for elements by name at any depth
... example:
using System;
using System.Xml.Linq;
class Test
{
static void Main()
{
string xml = @"
<root>
<child id='1'/>
<child id='2'>
<grandchild id='3' />
<grandchild id='4' />
</child>
</root>";
XDocument doc = XDoc...
Trigger change event of dropdown
...
Try this:
$('#id').change();
Works for me.
On one line together with setting the value:
$('#id').val(16).change();
share
|
improve t...
Node.js + Express: Routes vs controller
...e in general) is it doesn't push a lot of opinions on you; one of the downsides is it doesn't push any opinions on you. Thus, you are free (and required!) to set up any such opinions (patterns) on your own.
In the case of Express, you can definitely use an MVC pattern, and a route handler can certa...
Removing Data From ElasticSearch
...asticsearch.
Using cURL
curl -XDELETE localhost:9200/index/type/documentID
e.g.
curl -XDELETE localhost:9200/shop/product/1
You will then receive a reply as to whether this was successful or not. You can delete an entire index or types with an index also, you can delete a type by leaving out...
What does `kill -0 $pid` in a shell script do?
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sending the signal 0 to a given PID just checks if any process with the given PID is running and you have the permission to send a signal to it.
For more information see the following manpages:
kill(1)
$ man 1 kill
...
If sig is 0, then no signal is sent,...
Type definition in object literal in TypeScript
...as much as possible and then compose the object as the final step:
const id = GetId();
const hasStarted = true;
...
const hasFinished = false;
...
return {hasStarted, hasFinished, id};
This will properly type everything without any need for explicit typing.
There is no need to retype the field...
Can an Option in a Select tag carry multiple values?
...ecurity problem in his code while evaluating the input. The best way to avoid this is using JSON, as suggested by @DavidHoerster, because the input is better behaved.
– fotanus
Aug 27 '13 at 19:10
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When should I use nil and NULL in Objective-C?
...ly, they are exactly equal, you can send messages to both nil and to NULL. Idiomatically though nil is usually used to represent an object
– cobbal
Oct 14 '09 at 5:43
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