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Is it better to reuse a StringBuilder in a loop?
...arefully in a while (45 mins). Note that doing concatenation in the append calls reduces the point of using StringBuilder in the first place somewhat :)
– Jon Skeet
Oct 28 '08 at 7:26
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How to get a list of properties with a given attribute?
...existence of an attribute without the side-effect that the property get is called. Thanks Marc, it work!
– Örjan Jämte
Nov 18 '13 at 14:29
1
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catch exception that is thrown in different thread
...on an exception is thrown.
I need to get that exception information on the calling method ( Method1 )
4 Answers
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What is a Manifest in Scala and when do you need it?
Since Scala 2.7.2 there is something called Manifest which is a workaround for Java's type erasure. But how does Manifest work exactly and why / when do you need to use it?
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What is the function of the push / pop instructions used on registers in x86 assembly?
...ues. The general usage is
push eax ; preserve the value of eax
call some_method ; some method is called which will put return value in eax
mov edx, eax ; move the return value to edx
pop eax ; restore original eax
A push is a single instruction in x86, which d...
Adding up BigDecimals using Streams
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Obtain a List<BigDecimal>.
Turn it into a Stream<BigDecimal>
Call the reduce method.
3.1. We supply an identity value for addition, namely BigDecimal.ZERO.
3.2. We specify the BinaryOperator<BigDecimal>, which adds two BigDecimal's, via a method reference BigDecimal::add.
Upd...
When to use Task.Delay, when to use Thread.Sleep?
...VERY bad idea to use Thread.Sleep in asynchronous code.
Normally you will call Task.Delay() with the await keyword:
await Task.Delay(5000);
or, if you want to run some code before the delay:
var sw = new Stopwatch();
sw.Start();
Task delay = Task.Delay(5000);
Console.WriteLine("async: Running ...
BeautifulSoup Grab Visible Webpage Text
Basically, I want to use BeautifulSoup to grab strictly the visible text on a webpage. For instance, this webpage is my test case. And I mainly want to just get the body text (article) and maybe even a few tab names here and there. I have tried the suggestion in this SO question that returns l...
What's the equivalent of Java's Thread.sleep() in Objective-C/Cocoa?
...elector:withObject:AfterDelay. That's a method on NSObject you can use to call a method at some pre-determined interval later - it schedules a call that will be performed at a later time, but all of the other stuff the thread handles (like UI and data loads) will still continue.
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Remove All Event Listeners of Specific Type
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That is not possible without intercepting addEventListener calls and keep track of the listeners or use a library that allows such features unfortunately. It would have been if the listeners collection was accessible but the feature wasn't implemented.
The closest thing you can do i...