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LINQ to SQL Left Outer Join
... matches only 0-1. To do a left outer join, you need SelectMany and DefaultIfEmpty, for example:
var query = from c in db.Customers
join o in db.Orders
on c.CustomerID equals o.CustomerID into sr
from x in sr.DefaultIfEmpty()
select new {
...
jQuery - getting custom attribute from selected option
...
Note, if you're looking to retrieve the option that was selected when the page loaded (not the currently selected option) you can use $('option[selected]', this) instead (note: if no option was selected when the page loaded, that w...
Convert HttpPostedFileBase to byte[]
...am - but I'd avoid relying on all the data being available in a single go. If you're using .NET 4 this is simple:
MemoryStream target = new MemoryStream();
model.File.InputStream.CopyTo(target);
byte[] data = target.ToArray();
It's easy enough to write the equivalent of CopyTo in .NET 3.5 if you ...
How can I check whether an array is null / empty?
...
There's a key difference between a null array and an empty array. This is a test for null.
int arr[] = null;
if (arr == null) {
System.out.println("array is null");
}
"Empty" here has no official meaning. I'm choosing to define empty a...
Change EOL on multiple files in one go
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Note that this solution will not work if all your files are not already unix-style. Since replacing \n with \r\n will also convert \r\n to \r\r\n.
– Kirk Woll
Jan 10 '14 at 21:41
...
What is __pycache__?
...python, the interpreter compiles it to bytecode first (this is an oversimplification) and stores it in the __pycache__ folder. If you look in there you will find a bunch of files sharing the names of the .py files in your project's folder, only their extensions will be either .pyc or .pyo. These are...
Execute SQLite script
... @Alan PowerShell has some input redirection mechanism, no? And if not there's always bitops's approach.
– mu is too short
Jun 3 '16 at 17:52
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HTTP Content-Type Header and JSON
...re what it is. The browser just returns you the data from the AJAX call. If you want to parse it as JSON, you need to do that on your own.
The header is there so your app can detect what data was returned and how it should handle it. You need to look at the header, and if it's application/json t...
Intercepting links from the browser to open my Android app
....intent.category.BROWSABLE.
From Romain Guy's Photostream app's AndroidManifest.xml,
<activity
android:name=".PhotostreamActivity"
android:label="@string/application_name">
<!-- ... -->
<intent-filter>
<action andr...
ssh: The authenticity of host 'hostname' can't be established
...king=no
EDIT
As @IanDunn notes, there are security risks to doing this. If the resource you're connecting to has been spoofed by an attacker, they could potentially replay the destination server's challenge back to you, fooling you into thinking that you're connecting to the remote resource while...