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Cast to int vs floor
...will run into some overflow issues) and for negative values below -100000, etc. But I've clocked it to be at least 3 times faster than floor, which was really critical for our application. Take it with a grain of salt, test it on your system, etc. but it's worth considering IMHO.
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Can overridden methods differ in return type?
... for outer 'this' pointers, synthetic static fields for '.class' literals, etc, etc.
and covariant return types is yet more syntactic sugar added by javac.
for example, when compiling this:
class Base {
Object get() { return null; }
}
class Derived extends Base {
@Override
@SomeAnnotation
...
Insert picture/table in R Markdown [closed]
... below). To adjust the image properties (size, resolution, colors, border, etc), you'll need some form of image editor. I find I can do everything I need with one of ImageMagick, GIMP, or InkScape, all free and open source.
To add a picture, use:
I...
How do I capture the output into a variable from an external process in PowerShell?
... you capture the output, it is properly interleaved, using the same output order you would get without 2>&1; in other words: when outputting to the console, the captured output does NOT reflect the order in which stdout and stderr lines were generated by the external command.
If you capture ...
Make Vim show ALL white spaces as a character
...l white spaces as a character.
All I found was about tabs, trailing spaces etc.
23 Answers
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Return from lambda forEach() in java
...element from it, rather it filters only as many elements as it needs to in order to find the first matching one. You could also use findAny() instead of findFirst() if you don't necessarily care about getting the first matching player from the (ordered) stream but simply any matching item. This al...
How to optimize for-comprehensions and loops in Scala?
... loops, Scala's for comprehensions are actually syntactic sugar for higher-order methods; in this case, you're calling the foreach method on a Range object. Scala's for is very general, but sometimes leads to painful performance.
You might want to try the -optimize flag in Scala version 2.9. Observ...
Why do you need to put #!/bin/bash at the beginning of a script file?
...he "Bourne Again Shell"), scripts can be in bash, python, perl, ruby, PHP, etc, etc. For example, you might see #!/bin/perl or #!/bin/perl5.
PS:
The exclamation mark (!) is affectionately called "bang". The shell comment symbol (#) is sometimes called "hash".
PPS:
Remember - under *nix, associat...
Javascript AES encryption [closed]
...me of them I couldn't find the place to set the IV, or the mode (CBC, ECB, etc). Things were not where I expected them to be. SlowAES was not like that. The properties were right where I expected them to be. It was easy for me to pick up, having been familiar with the Java and .NET crypto program...
What's the @ in front of a string in C#?
...NewLine, and instead always use String.Format("x{0}", Environment.Newline) etc. Still, C# is more convenient here.
– Konrad Rudolph
Apr 6 '15 at 15:55
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