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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...
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...
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 ...
How do I get current URL in Selenium Webdriver 2 Python?
...nt url after a series of navigations in Selenium. I know there's a command called getLocation for ruby, but I can't find the syntax for Python.
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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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Why use armeabi-v7a code over armeabi code?
...te floating point instructions for VFP hardware and enables the soft-float calling conventions. armeabi doesn't support hard-float calling conventions (it means FP registers are not used to contain arguments for a function), but FP operations in HW are still supported.
armeabi-v7a application will ...
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...
Extension methods cannot be dynamically dispatched
...merable<dynamic>.
It is also possible to use dynamic objects by:
Calling the static method directly, per Jon Skeet's answer:
@model IEnumerable<dynamic>
@PartialExtensions.Partial(Html, "~/link/to/_partialView.cshtml", Model)
Wrapping it in a class.
public class DynamicQueryResu...