大约有 45,000 项符合查询结果（耗时：0.0664秒） [XML]
Detecting WPF Validation Errors
...The posted code did not work for me when using a ListBox. I rewrote it and now it works:
public static bool IsValid(DependencyObject parent)
{
if (Validation.GetHasError(parent))
return false;
// Validate all the bindings on the children
for (int i = 0; i != VisualTreeHelper.Ge...
The import org.junit cannot be resolved
... I added JUnit 4 via Properties -> Java Build Path, but every now and then Eclipse still shows me this error, though running the tests is possible without problems. Restarting Eclipse resolves the problem - for a while. Any explanation for this?
– Thomas W
...
#ifdef #ifndef in Java
...with "final" modifier Java compiler itself solves the problem. Because it knows in advance what would be the result of testing this condition.
For example this code:
boolean flag1 = true;
boolean flag2 = false;
int j=0;
for(int i=0;i<1000000000;i++){
if(flag1)
...
What are the differences between Generics in C# and Java… and Templates in C++? [closed]
...s not an object, and there's no underlying virtual machine which needs to know about a Person class. There's no boxing or unboxing, and functions don't have to belong to classes, or indeed anything.
Because of this, the C++ compiler places no restrictions on what you can do with templates - basicall...
What is the difference between 'protected' and 'protected internal'?
...
@Shimmy two years later, and yes. Now there is a way in C# 7.2. Its called private protected docs.microsoft.com/en-us/dotnet/csharp/language-reference/…
– Pauli Østerø
Nov 17 '17 at 19:19
...
Any way to clear python's IDLE window?
I know there's a similar topic about python console, but I do not know if they are the same. I tried system("clear") and it didn't work here.
...
Should Github be used as a CDN for javascript libraries? [closed]
...
I hope you know CachedCommons.com is just serving from github.com
– ocodo
Dec 27 '12 at 6:00
...
What are the most common non-BMP Unicode characters in actual use? [closed]
...
Emoji are now the most common non-BMP characters by far. ????, otherwise known as U+1F602 FACE WITH TEARS OF JOY, is the most common one on Twitter's public stream. It occurs more frequently than the tilde!
...
Get the device width in javascript
...max-width value of the html tag:
maxwidth = $('html').css('max-width');
Now you can use this value to make conditional changes:
If (maxwidth == '480px') { do something }
If putting the max-width value on the html tag seems scary, then maybe you can put on a different tag, one that is only used...
How to get the number of days of difference between two dates on mysql?
...-14 11:00:00');
returns 1
select timestampdiff(DAY, '2016-04-13 11:00:00', now()); returns how many full 24h days has passed since 2016-04-13 11:00:00 until now.
Hope it will help someone, because at first it isn't much obvious why datediff returns values which seems to be unexpected or wrong.
...