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What blocks Ruby, Python to get Javascript V8 speed? [closed]
... where optimizations could be used (and Unladen Swallow, a Google project, started to implement these before biting the dust). Here are some of the optimizations that they planned. I could see Python gaining V8 speed in the future if a JIT a la PyPy gets implemented for CPython, but that does not se...
What's the fastest way to loop through an array in JavaScript?
...
You have to be careful using this loop. I started using it and had a hard to track bug because of one mistake I made. If you nest two loops like this: jsfiddle.net/KQwmL/1. You have to be careful to name the var len differently in the two loops, otherwise the second ...
Can a Windows batch file determine its own file name?
...g code.
set b=%~0
echo %~n0%b:~8,4%
I have learned that ":~8,4%" means start at the 9th character of the variable and then show show the next 4 characters. The range is 0 to the end of the variable string. So %Path% would be very long!
fIlEnAmE.bat
012345678901
However, this is not as sound a...
How to make node.js require absolute? (instead of relative)
.../boop/bar.js, node will look for ./foo.js in /beep/boop/foo.js. Paths that start with a ./ or ../ are always local to the file that calls require().
If however you require a non-relative name such as require('xyz') from /beep/boop/foo.js, node searches these paths in order, stopping at the first ma...
Sorting a vector of custom objects
... to obtain relative ordering of X elements, have already been posted, I'll start by some notes on "why" and "when" to use the various approaches.
The "best" approach will depend on different factors:
Is sorting ranges of X objects a common or a rare task (will such ranges be sorted a mutiple diff...
Android: upgrading DB version and adding new table
...e app after a long time, to a version using database version 7 and the app starts crashing because of certain incompatible changes.
Then the updates in the database will be done step-wise, covering all possible cases, i.e. incorporating the changes in the database done for each new version and ther...
What is the default location for MSBuild logs?
... write a macro and assign it to the toolbar button. These links could be a starting point stackoverflow.com/questions/12062515/… and vlasovstudio.com/visual-commander
– Dmitry Pavlov
Jul 16 '16 at 19:44
...
Should operator
...<(ostream &os) {
return os << paragraph;
}
I can't even start to think how this method could work in a stream.
Here are the two ways to implement the << and >> operators.
Let's say you want to use a stream-like object of type T.
And that you want to extract/insert f...
How to undo 'git reset'?
..."original" or for "origin"? … Ie, does it reset to where HEAD was before starting to monkey with it? Or to where HEAD is on the origin? What happens if you've moved HEAD several times before the git reset ORIG_HEAD? Thanks.
– Benjohn
Sep 3 '18 at 12:21
...
Why does PHP 5.2+ disallow abstract static class methods?
...ract static methods reasonable and useful. Rasmus Lerdorf (creator of PHP) starts off by labelling the request as bogus and goes through a long chain of bad reasoning to try to justify the warning. Then, finally, this exchange takes place:
Giorgio
i know, but:
abstract class cA
{
//s...