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Unique Key constraints for multiple columns in Entity Framework
...
With Entity Framework 6.1, you can now do this:
[Index("IX_FirstAndSecond", 1, IsUnique = true)]
public int FirstColumn { get; set; }
[Index("IX_FirstAndSecond", 2, IsUnique = true)]
public int SecondColumn { get; set; }
The second parameter in the attribute is where you can specify th...
Passing an array as a function parameter in JavaScript
...sociative array (named keys) instead, then use an object. Coming from PHP (and always led to this thread by google) this took me a while to figure out. You can pass the whole object as a parameter then. w3schools.com/js/js_objects.asp
– timhc22
May 29 '14 at 8:...
machine learning libraries in C# [closed]
...wesome list on GitHub. Of the frameworks listed, Accord.NET is open-source and the most popular with over 2,000 stars.
Also, check out the official machine learning library for .NET provided by Microsoft: https://github.com/dotnet/machinelearning
OLD
There's a neural network library called AFor...
JavaScript: remove event listener
...to use named functions.
Also, the click variable needs to be outside the handler to increment.
var click_count = 0;
function myClick(event) {
click_count++;
if(click_count == 50) {
// to remove
canvas.removeEventListener('click', myClick);
}
}
// to add
canvas.addEventL...
How to delete multiple files at once in Bash on Linux?
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Bash supports all sorts of wildcards and expansions.
Your exact case would be handled by brace expansion, like so:
$ rm -rf abc.log.2012-03-{14,27,28}
The above would expand to a single command with all three arguments, and be equivalent to typing:
$ rm -rf...
How to Load an Assembly to AppDomain with all references recursively?
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You need to invoke CreateInstanceAndUnwrap before your proxy object will execute in the foreign application domain.
class Program
{
static void Main(string[] args)
{
AppDomainSetup domaininfo = new AppDomainSetup();
domaininfo.Appli...
Changing the status bar text color in splash screen iOS 7
...n ignore all the possible values listed in the drop down for this property and type UIStatusBarStyleLightContent instead.
And you don't have to set UIViewControllerBasedStatusBarAppearanceto NOin your plist, you can set the preferredStatusBarStyle you want to your view controllers.
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Xcode 5 & Asset Catalog: How to reference the LaunchImage?
I am using Xcode 5's Asset Catalog, and I would like to use my LaunchImage as the background image of my home view (a pretty common practice to make the transition from 'loading' to 'loaded' look smooth).
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Printing a variable memory address in swift
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Swift 2
This is now part of the standard library: unsafeAddressOf.
/// Return an UnsafePointer to the storage used for `object`. There's
/// not much you can do with this other than use it to identify the
/// object
Swift 3
For Swift 3, use withUnsafeP...
embedding image in html email
...ttempts have failed, with the image showing up as a red X (in Outlook 2007 and yahoo mail)
14 Answers
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