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How is the Linux kernel tested ?
...
Fault Injection Framework (included in Linux kernel) allows for infusing errors and exceptions into an application's logic to achieve a higher coverage and fault tolerance of the system.
share
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i...
node.js fs.readdir recursive directory search
..._dirname)
.then(files => console.log(files))
.catch(e => console.error(e));
Node 10.10+
Updated for node 10+ with even more whizbang:
const { resolve } = require('path');
const { readdir } = require('fs').promises;
async function getFiles(dir) {
const dirents = await readdir(dir, { wit...
Are loops really faster in reverse?
...hing like
array.forEach(function(i) {
do_it(i);
});
It is also less error-prone and browsers have a chance to optimize your code.
[REMARK: not only the browsers, but you too have a space to optimize easily, just redefine the forEach function (browser dependently) so that it uses the latest ...
Tab space instead of multiple non-breaking spaces (“nbsp”)?
...he W3C validator is strict to the degree of always flagging custom tags as errors. It's up to you which is more important. It's about time we got a decent official implimentation of tabs added to the Html mark-up set. Hope this helps.
– WonderWorker
Jun 8 '16 a...
Android. Fragment getActivity() sometimes returns null
In developer console error reports sometimes I see reports with NPE issue. I do not understand what is wrong with my code. On emulator and my device application works good without forcecloses, however some users get NullPointerException in fragment class when the getActivity() method is called.
...
What does it mean in shell when we put a command inside dollar sign and parentheses: $(command)
...theses, it will first run echo foo then will try to run foo which gives an error
– Accountant م
Apr 18 '19 at 17:25
...
How do I push amended commit to the remote Git repository?
...ve resolved any conflicts, you can push again.
So:
git pull
If you get errors in pull, maybe something is wrong in your local repository configuration (I had a wrong ref in the .git/config branch section).
And after
git push
Maybe you will get an extra commit with the subject telling about a...
What are “res” and “req” parameters in Express functions?
...
I noticed one error in Dave Ward's answer (perhaps a recent change?):
The query string paramaters are in request.query, not request.params. (See https://stackoverflow.com/a/6913287/166530 )
request.params by default is filled with the va...
How to split strings across multiple lines in CMake?
...t;STREQUAL:${CMAKE_CXX_SIMULATE_ID},MSVC>>"
">:"
"-Wall -Werror "
">$<"
"$<CXX_COMPILER_ID:GNU>:"
"-Wno-multichar -Wno-sign-compare "
">")
add_compile_options(${WARNING_OPTIONS})
This is because the resulting options are passed to the compiler in quotes
/us...
How does “cat
...f the variable PS2, processed as described in Shell Variables, to standard error before reading each line of input until the delimiter has been recognized.
Examples
Some examples not yet given.
Quotes prevent parameter expansion
Without quotes:
a=0
cat <<EOF
$a
EOF
Output:
0
With qu...