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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.
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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?
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What is mutex and semaphore in Java ? What is the main difference?
What is mutex and semaphore in Java ? What is the main difference ?
11 Answers
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What does the “yield” keyword do?
What is the use of the yield keyword in Python, and what does it do?
42 Answers
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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...
Iterate over a Javascript associative array in sorted order
Let's say I have a Javascript associative array (a.k.a. hash, a.k.a. dictionary):
10 Answers
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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.
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What is the copy-and-swap idiom?
What is this idiom and when should it be used? Which problems does it solve? Does the idiom change when C++11 is used?
5 An...
Is std::unique_ptr required to know the full definition of T?
I have some code in a header that looks like this:
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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
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