大约有 42,000 项符合查询结果（耗时：0.0688秒） [XML]
What are the differences between Deferred, Promise and Future in JavaScript?
What are the differences between Deferreds, Promises and Futures?
Is there a generally approved theory behind all these three?
...
Nearest neighbors in high-dimensional data?
I have asked a question a few days back on how to find the nearest neighbors for a given vector. My vector is now 21 dimensions and before I proceed further, because I am not from the domain of Machine Learning nor Math, I am beginning to ask myself some fundamental questions:
...
What's the best way of scraping data from a website? [closed]
I need to extract contents from a website, but the application doesn’t provide any application programming interface or another mechanism to access that data programmatically.
...
lexers vs parsers
Are lexers and parsers really that different in theory?
5 Answers
5
...
Is std::unique_ptr required to know the full definition of T?
I have some code in a header that looks like this:
8 Answers
8
...
Adding 'serial' to existing column in Postgres
I have a small table (~30 rows) in my Postgres 9.0 database with an integer ID field (the primary key) which currently contains unique sequential integers starting at 1, but which was not created using the 'serial' keyword.
...
delete a.x vs a.x = undefined
Is there any substantial difference in doing either of these?
9 Answers
9
...
How does StartCoroutine / yield return pattern really work in Unity?
I understand the principle of coroutines. I know how to get the standard StartCoroutine / yield return pattern to work in C# in Unity, e.g. invoke a method returning IEnumerator via StartCoroutine and in that method do something, do yield return new WaitForSeconds(1); to wait a second, th...
What does the “yield” keyword do?
What is the use of the yield keyword in Python, and what does it do?
42 Answers
42
...
How can I build a small operating system on an old desktop computer? [closed]
This might be in vain, as I know writing an operating system is unbearably complicated (especially by oneself).
20 Answers
...