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Awaiting multiple Tasks with different results
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@Sergey Calling WhenAll has no impact on when the operations execute, or how they execute. It only has any possibility of effecting how the results are observed. In this particular case, the only difference is that an error in one ...
How do I simulate a hover with a touch in touch enabled browsers?
...is to your CSS as well:
.hover {
-webkit-user-select: none;
-webkit-touch-callout: none;
}
To stop the browser asking you to copy/save/select the image or whatever.
Easy!
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Dictionaries and default values
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@Jens: Function calls are expensive.
– Tim Pietzcker
Mar 13 '15 at 21:35
1
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Merge/flatten an array of arrays
...t modify the source array, so the merged array will remain empty after the call to concat. Better to say something like: merged = merged.concat.apply(merged, arrays);
– Nate
Jan 24 '13 at 21:12
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HTTP error 403 in Python 3 Web Scraping
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I assume it's safe to reuse req for multiple urlopen calls.
– Acumenus
Feb 2 '19 at 0:28
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Why is Multiple Inheritance not allowed in Java or C#?
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The short answer is: because the language designers decided not to.
Basically, it seemed that both the .NET and Java designers did not allow multiple inheritance because they reasoned that adding MI added too much complexity to the languages while providing too little benefit.
For a more fun and...
Html.Partial vs Html.RenderPartial & Html.Action vs Html.RenderAction
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Html.Partial returns a String. Html.RenderPartial calls Write internally and returns void.
The basic usage is:
// Razor syntax
@Html.Partial("ViewName")
@{ Html.RenderPartial("ViewName"); }
// WebView syntax
<%: Html.Partial("ViewName") %>
<% Html.RenderPartial(...
How to define custom exception class in Java, the easiest way?
...onstructors, you need to define the one taking a String in your class. Typically you use super(message) in your constructor to invoke your parent constructor. For example, like this:
public class MyException extends Exception {
public MyException(String message) {
super(message);
}
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How do you build a Singleton in Dart?
.... There's the weird syntax Singleton._internal(); that looks like a method call when it's really a constructor definition. There's the _internal name. And there's the nifty language design point that Dart lets you start out (dart out?) using an ordinary constructor and then, if needed, change it to ...
How to prevent SIGPIPEs (or handle them properly)
...he following code:
signal(SIGPIPE, SIG_IGN);
If you're using the send() call, another option is to use the MSG_NOSIGNAL option, which will turn the SIGPIPE behavior off on a per call basis. Note that not all operating systems support the MSG_NOSIGNAL flag.
Lastly, you may also want to consider ...