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New features in java 7
...new features in java 7 is going to be implemented?
And what are they doing now?
8 Answers
...
Transposing a 2D-array in JavaScript
... can just do const transpose = apply(zip)
– Guy Who Knows Stuff
Apr 26 '18 at 5:09
1
Why would th...
Installing Python packages from local file system folder to virtualenv with pip
...default answer. No need to make pip hunt around with --find-links if you know exactly where your package is on the local machine.
– Robert
Feb 10 at 19:33
add a comment
...
Can we define implicit conversions of enums in c#?
... the resource dependent display names weren't completely removed; they are now)
initialization wasn't perfect: if the first thing you did was access the static .Values property from the base class, you'd get a NPE. Fixed this by forcing the base class to curiously-recursively (CRTP) force the static...
Recursive file search using PowerShell
...ion. If you want to search for a file with a certain extension, but don't know the name of the file, you can use:
dir -Path C:\FolderName -Filter *.fileExtension -Recurse | %{$_.FullName}
Or vice versa:
dir -Path C:\FolderName -Filter FileName.* -Recurse | %{$_.FullName}
...
How to verify if a file exists in a batch file?
...file does or does not exist:
if exist C:\myprogram\sync\data.handler echo Now Exiting && Exit
if not exist C:\myprogram\html\data.sql Exit
We will take those three files and put it in a temporary place. After deleting the folder, it will restore those three files.
xcopy "test" "C:\temp"
...
Comparing mongoose _id and strings
...latko all these years later, and guess what. I prefer your version to mine now. mind if i add it to my answer with proper attribution?
– r3wt
Apr 4 '18 at 3:40
1
...
Is the practice of returning a C++ reference variable evil?
...nt() {
int* i = new int;
return *i; // DON'T DO THIS.
}
Because now the client has to eventually do the strange:
int& myInt = getInt(); // note the &, we cannot lose this reference!
delete &myInt; // must delete...totally weird and evil
int oops = getInt();
delete ...
How to count the number of set bits in a 32-bit integer?
...
This is known as the 'Hamming Weight', 'popcount' or 'sideways addition'.
The 'best' algorithm really depends on which CPU you are on and what your usage pattern is.
Some CPUs have a single built-in instruction to do it and others hav...
node.js fs.readdir recursive directory search
... yield res;
}
}
}
Usage has changed because the return type is now an async iterator instead of a promise
(async () => {
for await (const f of getFiles('.')) {
console.log(f);
}
})()
In case somebody is interested, I've written more about async iterators here: https://qwtel.c...