大约有 47,000 项符合查询结果（耗时：0.0565秒） [XML]
ASP.NET MVC - Attaching an entity of type 'MODELNAME' failed because another entity of the same type
...h a custom join table in a disconnected app. Even with the entity grabbed from the database, I was getting referential errors, etc. I was using "context.Entry(score).State = System.Data.Entity.EntityState.Modified;" but this finally worked! Thank you!!
– firecape
...
When to use IList and when to use List
...hout the consuming method ever knowing. I thought I'd never need to change from a List<T> but had to later change to use a custom list library for the extra functionality it provided. Because I'd only returned an IList<T> none of the people that used the library had to change their code....
Why is the asterisk before the variable name, rather than after the type?
...my eyes a design error. If I could, I would remove that way of declaration from C entirely, and made it so both are of type int*.
– Adam Bajger
May 29 '19 at 12:54
1
...
raw vs. html_safe vs. h to unescape html
...n that, but it's basically it). This way, you can return HTML Safe strings from helpers or models at will.
h can only be used from within a controller or view, since it's from a helper. It will force the output to be escaped. It's not really deprecated, but you most likely won't use it anymore: the...
How can I get the line number which threw exception?
... need the line number for more than just the formatted stack trace you get from Exception.StackTrace, you can use the StackTrace class:
try
{
throw new Exception();
}
catch (Exception ex)
{
// Get stack trace for the exception with source file information
var st = new StackTrace(ex, tr...
Handle spring security authentication exceptions with @ExceptionHandler
...
Ok, I tried as suggested writing the json myself from the AuthenticationEntryPoint and it works.
Just for testing I changed the AutenticationEntryPoint by removing response.sendError
@Component("restAuthenticationEntryPoint")
public class RestAuthenticationEntryPoint impl...
AngularJS : Why ng-bind is better than {{}} in angular?
...urrently building a big single page app (~500 bindings per view). Changing from {{}} to strict ng-bind did save us about 20% in every scope.$digest.
Suggestion:
If you use a translation module such as angular-translate, always prefer directives before brackets annotation.
{{'WELCOME'|translate...
How to use the IEqualityComparer
...lass to do this work, but the execution of the function causes a big delay from the function without distinct, from 0.6 sec to 3.2 sec!
...
In MVVM should the ViewModel or Model implement INotifyPropertyChanged?
...ents INotifyPropertyChanged
Check out the M-V-VM Project Template/Toolkit from http://blogs.msdn.com/llobo/archive/2009/05/01/download-m-v-vm-project-template-toolkit.aspx.
It uses the DelegateCommand for commanding and it should be a great starting template for you M-V-VM projects.
...
Get started with Latex on Linux [closed]
...
Create a file called test.tex and put some content in it, say the example from the LaTeX primer:
\documentclass[a4paper,12pt]{article}
\begin{document}
The foundations of the rigorous study of \emph{analysis}
were laid in the nineteenth century, notably by the
mathematicians Cauchy and Weierstrass...