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~x + ~y == ~(x + y) is always false?
...er only the rightmost bit of both x and y (IE. if x == 13 which is 1101 in base 2, we will only look at the last bit, a 1) Then there are four possible cases:
x = 0, y = 0:
LHS: ~0 + ~0 => 1 + 1 => 10
RHS: ~(0 + 0) => ~0 => 1
x = 0, y = 1:
LHS: ~0 + ~1 => 1 + 0 => 1
...
How to stop mongo DB in one command
...$ kill <PID> (the Mongo docs have more info on this)
Or on Red Hat based systems:
service mongod stop
Or on Windows if you have installed as a service named MongoDB:
net stop MongoDB
And if not installed as a service (as of Windows 7+) you can run:
taskkill /f /im mongod.exe
To l...
Why does Stream not implement Iterable?
...be replayable.
The only workaround that I can think of, where an iterable based on a stream is replayable too, is to re-create the stream. I am using a Supplier below to create a new instance of stream, everytime a new iterator is created.
Supplier<Stream<Integer>> streamSupplier ...
Erratic hole type resolution
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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How to create a tag with Javascript?
...Element('style');
styleNode.type = "text/css";
// browser detection (based on prototype.js)
if(!!(window.attachEvent && !window.opera)) {
styleNode.styleSheet.cssText = 'span { color: rgb(255, 0, 0); }';
} else {
var styleText = document.createTextNode('span { col...
Mongo Shell - Console/Debug Log
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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How to switch between hide and view password
...itch between hide and view password in an android EditText?
A number of PC based apps let the user do this.
30 Answers
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How to leave a message for a github.com user
...
For lazy people, like me, a snippet based on Nikhil's solution
<input id=username type="text" placeholder="github username or repo link">
<button onclick="fetch(`https://api.github.com/users/${username.value.replace(/^.*com[/]([^/]*).*$/,'$1')}/e...
Django “login() takes exactly 1 argument (2 given)” error
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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what is the difference between GROUP BY and ORDER BY in sql
...ount of active and inactive customers. The group by aggregated the results based on the field you specified.
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