大约有 45,000 项符合查询结果（耗时：0.0792秒） [XML]
Why does C# disallow readonly local variables?
... probably just have to be a compile-time feature - the compiler would prohibit you from writing to the variable after the initial declaration (which would have to include an assignment).
Can I see value in this? Potentially - but not a lot, to be honest. If you can't easily tell whether or not a va...
How do I update the GUI from another thread?
...
For .NET 2.0, here's a nice bit of code I wrote that does exactly what you want, and works for any property on a Control:
private delegate void SetControlPropertyThreadSafeDelegate(
Control control,
string propertyName,
object propertyVal...
What does the 'static' keyword do in a class?
...ate an instance of the Math class.
For more information, see the relevant bit of Oracle's Java Tutorial.
Sidenote
Java unfortunately allows you to access static members as if they were instance members, e.g.
// Bad code!
Thread.currentThread().sleep(5000);
someOtherThread.sleep(5000);
That m...
Is it possible to execute code once before all tests run?
Basically I would like to tell MSTest to execute a bit of code before launching into a series of test runs, essentially what I would like to do is the same thing as sticking some code in Main() .
...
Is it possible to have multiple styles inside a TextView?
... decisions. Use multiple widgets if you need precise placement of discrete bits of text. Use inline markup if you, um, need markup inline in a widget. Remember: there is no FlowLayout in Android, so stringing together multiple TextViews to create a paragraph is not truly practical AFAIK.
...
Why can tuples contain mutable items?
...cient to create because there's no need for overallocation, etc. They're a bit slower than lists for random item access, but faster again for unpacking (at least on my machine). If tuples were mutable, then they wouldn't be as fast for purposes such as these.
Tuples are general-purpose: Tuples need ...
Can you force Visual Studio to always run as an Administrator in Windows 8?
...ich has a feature to change it to run as admin (as well as some other cool bits and pieces)
Update
One can install the commands from the Visual Studio menu bar using Tools->Extensions and Updates selecting Online and searching for vscommands where then one selects VSCommands for Visual Studio...
c# open file with default application and parameters
...nverted the VB code in the blog post linked by xsl to C# and modified it a bit:
public static bool TryGetRegisteredApplication(
string extension, out string registeredApp)
{
string extensionId = GetClassesRootKeyDefaultValue(extension);
if (extensionId == null)
{
...
Map and Reduce in .NET
...#. When you're naming functions in that world, aggregate starts to sound a bit more familiar than "reduce" when compared with things like Select and Group By. I'm not saying it's right, it annoys me to no ends but I imagine that's the reason for it.
– Elliot Blackburn
...
Programmatically set height on LayoutParams as density-independent pixels
...has to be converted. Since the conversion rate does not change, it saves a bit of processing time.
/**
* Get conversion rate from dp into px.<br>
* E.g. to convert 100dp: px = (int) (100 * convRate);
* @param context e.g. activity
* @return conversion rate
*/
public static float convRate...