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Why switch is faster than if
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DanielDaniel
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Change one value based on another value in pandas
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How to make a promise from setTimeout
...eout(() => {
l2.cancel();
}, 150);
Original Answer from 2014
Usually you'll have a promise library (one you write yourself, or one of the several out there). That library will usually have an object that you can create and later "resolve," and that object will have a "promise" you c...
What is the difference between packaged_task and async
...scribes the insights. Also do note that this behavior was specified in C++14 and up, but also commonly implemented in C++11.
Further differences
By using std::async you cannot run your task on a specific thread anymore, where std::packaged_task can be moved to other threads.
std::packaged_task<...
Why does base64 encoding require padding if the input length is not divisible by 3?
What is the purpose of padding in base64 encoding. The following is the extract from wikipedia:
3 Answers
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Looking for a clear definition of what a “tokenizer”, “parser” and...
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Is it safe to ignore the possibility of SHA collisions in practice?
...256 (n=256) and one billion messages (p=109) then the probability is about 4.3*10-60.
A mass-murderer space rock happens about once every 30 million years on average. This leads to a probability of such an event occurring in the next second to about 10-15. That's 45 orders of magnitude more probabl...
Adding 'serial' to existing column in Postgres
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Look at the following commands (especially the commented block).
DROP TABLE foo;
DROP TABLE bar...
Foreign keys in mongo?
...{group:"phones"})
> db.foo.find()
{ "_id" : ObjectId("4df6539ae90592692ccc9940"), "group" : "phones" }
{ "_id" : ObjectId("4df6540fe90592692ccc9941"), "group" : "phones" }
>db.foo.find({'_id':ObjectId("4df6539ae90592692ccc9940")})
{ "_id" : ObjectId("4df6539ae90592692ccc9940...
What is the list of possible values for navigator.platform as of today? [closed]
...ing a browser compiled for 16-bit, even though the user is on a 32-bit or 64-bit Windows machine.
Of course W3Schools lists the old definition (I'm not even gonna link to them). W3 and MDN have agreed on a different definition though:
navigator.platform represents the platform on which the browser ...