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Unique Key constraints for multiple columns in Entity Framework
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If you're using Code-First, you can implement a custom extension HasUniqueIndexAnnotation
using System.ComponentModel.DataAnnotations.Schema;
using System.Data.Entity.Infrastructure.Annotations;
using System.Data.Entity.ModelConfiguration.Configuration;
internal static c...
iOS app with framework crashed on device, dyld: Library not loaded, Xcode 6 Beta
... linked framework and thus is linked to at runtime.
** Note:** Embedding custom frameworks is only supported in iOS > 8 and thus an alternative solution that works on older versions of iOS follows.
For iOS less than 8
If you influence this framework (have access to the source code/build proc...
How to get JavaScript caller function line number? How to get JavaScript caller source URL?
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Works in node too. Pop this inside your custom log() function (which adds whatever other useful workarounds you need - eg fixed for Chrome array logging) and still line numbers from wherever you called log().
– mikemaccana
Apr...
PopupWindow - Dismiss when clicked outside
...e small note is to rather use another name other than PopupWindow for your custom class, maybe call it MyPopupWindow instead of Popupwindow so that android doesn't get confused between your its standard android class and your custom class.
– Simon
Aug 8 '15 at ...
How to show the “Are you sure you want to navigate away from this page?” when changes committed?
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Update (2017)
Modern browsers now consider displaying a custom message to be a security hazard and it has therefore been removed from all of them. Browsers now only display generic messages. Since we no longer have to worry about setting the message, it is as simple as:
// Enable...
How to implement __iter__(self) for a container object (Python)
I have written a custom container object.
9 Answers
9
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How to get current time and date in Android
...teFormat can be problematic if performance is an issue. In my app I had a custom view that had about 20 HH:MM labels that represented specific times (long integers holding milliseconds), and an equal number of drawable resources. Initial testing showed the interaction was not as fluid as I wanted....
Maximum size of a element
...ogrammatically determine the browser's max canvas size or test support for custom canvas dimensions, check out canvas-size.
GitHub: https://github.com/jhildenbiddle/canvas-size
NPM: https://www.npmjs.com/package/canvas-size
From the docs:
The HTML canvas element is widely supported by modern...
INotifyPropertyChanged vs. DependencyProperty in ViewModel
...meProperty = DependencyProperty.Register( "Name", typeof( String), typeof( Customer ) );
public String Name
{
set { SetValue( NameProperty, value ); }
get { return ( String ) GetValue( NameProperty ); }
}
In your getter and setter --- all you can do is simply call SetValue and GetValue re...
LINQ to Entities case sensitive comparison
...bled = true;
}
public bool IsEnabled { get; set; }
}
public class CustomSqlServerMigrationSqlGenerator : SqlServerMigrationSqlGenerator
{
protected override void Generate(AlterColumnOperation alterColumnOperation)
{
base.Generate(alterColumnOperation);
AnnotationValu...