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Casting vs using the 'as' keyword in the CLR
...onsistent.
As per naasking's answer, is-and-cast or is-and-as are both as fast as as-and-null-check with modern JITs, as shown by the code below:
using System;
using System.Diagnostics;
using System.Linq;
class Test
{
const int Size = 30000000;
static void Main()
{
object[] v...
Why maven? What are the benefits? [closed]
... to my experience, modular Maven builds using binary dependencies gives me faster build time than typical monolithic Ant builds. Anyway, have a look at Maven Shell for a ready to (re)use Maven environment (which is awesome by the way).
So at end, and I'm sorry to say so, it's not really Maven that ...
Why is rbindlist “better” than rbind?
...does it really excel
Some questions that show where rbindlist shines are
Fast vectorized merge of list of data.frames by row
Trouble converting long list of data.frames (~1 million) to single data.frame using do.call and ldply
These have benchmarks that show how fast it can be.
rbind.data.fra...
What are the dangers when creating a thread with a stack size of 50x the default?
...ut different things:
Accessing memory (reading and writing) is just as fast wherever it is - stack, global or heap.
Allocating it, however, is fastest on stack and slowest on heap.
It goes like this: stack < global < heap. (allocation time)
Technically, stack allocation isn't really ...
COUNT(*) vs. COUNT(1) vs. COUNT(pk): which is better? [duplicate]
...e type of table in some cases.
For example, using MySQL, count(*) will be fast under a MyISAM table but slow under an InnoDB. Under InnoDB you should use count(1) or count(pk).
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improve this...
Cannot push to Git repository on Bitbucket
...he actual problem, follow the instructions below:
Fixing the SSH issue as fast as possible
This is a set of instructions derived from the URL linked to by VonC. It was modified to be as resilient and succinct as possible.
Don't type the $ or any lines that do not begin with $ (the $ means this ...
Python vs Bash - In which kind of tasks each one outruns the other performance-wise? [closed]
...le shows many results that say that, as Python is byte-compiled is usually faster. I even found this that claims that you can see an improvement of over 2000% on dictionary-based operations.
...
nginx upload client_max_body_size issue
...
nginx "fails fast" when the client informs it that it's going to send a body larger than the client_max_body_size by sending a 413 response and closing the connection.
Most clients don't read responses until the entire request body is se...
Should I always use a parallel stream when possible?
...The 4 results will then be reduced. If massive really is massive, even for fast unit processing, parallelization can be effective. But as always, you have to measure.
– JB Nizet
Apr 8 '14 at 16:49
...
Does Java 8 provide a good way to repeat a value or function?
... same thing in about the same number of lines.
However, this technique is faster than the IntStream.generate and IntStream.iterate approaches, and surprisingly, it's also faster than the IntStream.range approach.
For iterate and generate the result is perhaps not too surprising. The streams framew...