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How to determine if a type implements a specific generic interface type
...nger LINQ queries. Keep in mind though that to use this, you need to have .NET framework 3.5.
– Daniel T.
Nov 10 '09 at 3:25
7
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Why do some claim that Java's implementation of generics is bad?
...e it's "meant" to be
Can't be used for value types (this is a biggie - in .NET a List<byte> really is backed by a byte[] for example, and no boxing is required)
Syntax for calling generic methods sucks (IMO)
Syntax for constraints can get confusing
Wildcarding is generally confusing
Various re...
How can I default a parameter to Guid.Empty in C#?
...that struct is not a primitive type.
For a list of all primitive types in .NET see http://msdn.microsoft.com/en-gb/library/system.typecode.aspx
(note that enum usually inherits int, which is a primitive)
But new Guid() is not a constant too!
I'm not saying it needs a constant. It needs something t...
Using CSS for a fade-in effect on page load
...fadein 2s; /* Firefox < 16 */
-ms-animation: fadein 2s; /* Internet Explorer */
-o-animation: fadein 2s; /* Opera < 12.1 */
animation: fadein 2s;
}
@keyframes fadein {
from { opacity: 0; }
to { opacity: 1; }
}
/* Firefox < 16 */
@-moz-keyframes fadei...
离线版启动超时，有报错日志 - App Inventor 2 离线版 - 清泛IT社区，为创新赋能！
...opens=java.base/java.lang=ALL-UNNAMED, -Xmx4G, --add-opens, java.base/java.net=ALL-UNNAMED, --add-opens, java.base/sun.net.www.protocol.http=ALL-UNNAMED, --add-opens, java.base/sun.net.www.protocol.https=ALL-UNNAMED, -Dfile.encoding=UTF-8, -classpath, D:\appinventor\AppInventor2\resources\app.asar.u...
Which is preferred: Nullable.HasValue or Nullable != null?
...in C#? How do you declare your own nullable type that behaves the same as .NET's nullable type? Since when is Null a type in .NET? Can you point to the part in the CLR/C# specification where that's said? Nullables are well defined in the CLR specification, their behaviour is no "implementation of an...
Imitating a blink tag with CSS3 animations
...
The original Netscape <blink> had an 80% duty cycle. This comes pretty close, although the real <blink> only affects text:
.blink {
animation: blink-animation 1s steps(5, start) infinite;
-webkit-animation: blink-an...
Using LINQ to concatenate strings
...
return string.Join(", ", strings.ToArray());
In .Net 4, there's a new overload for string.Join that accepts IEnumerable<string>. The code would then look like:
return string.Join(", ", strings);
...
How do I catch a PHP fatal (`E_ERROR`) error?
... @Pacerier I see, that's an interesting question. Have a look at php.net/error_get_last, one of the comments mentions that "If an error handler (see set_error_handler ) successfully handles an error then that error will not be reported by this function."
– periklis
...
Unicode, UTF, ASCII, ANSI format differences
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UTF-16: 2 bytes per "code unit". This is the native format of strings in .NET, and generally in Windows and Java. Values outside the Basic Multilingual Plane (BMP) are encoded as surrogate pairs. These used to be relatively rarely used, but now many consumer applications will need to be aware of no...