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Lambda capture as const reference?
Is it possible to capture by const reference in a lambda expression?
8 Answers
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How do I initialize an empty array in C#?
Is it possible to create an empty array without specifying the size?
13 Answers
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How to convert a byte array to a hex string in Java?
I have a byte array filled with hex numbers and printing it the easy way is pretty pointless because there are many unprintable elements. What I need is the exact hexcode in the form of: 3a5f771c
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When is null or undefined used in JavaScript? [duplicate]
...nfused as to when JavaScript returns null or undefined . Also different browsers seem to be returning these differently.
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In-memory size of a Python structure
...here a reference for the memory size of Python data stucture on 32- and 64-bit platforms?
7 Answers
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Is Big O(logn) log base e?
For binary search tree type of data structures, I see the Big O notation is typically noted as O(logn). With a lowercase 'l' in log, does this imply log base e (n) as described by the natural logarithm? Sorry for the simple question but I've always had trouble distinguishing between the different...
How can I display an RTSP video stream in a web page?
...ides a live RTSP video stream. I can use VLC media player to view the feed by providing it with the URL:
15 Answers
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Comparison of Android networking libraries: OkHTTP, Retrofit, and Volley [closed]
Two-part question from an iOS developer learning Android, working on an Android project that will make a variety of requests from JSON to image to streaming download of audio and video:
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SHA1 vs md5 vs SHA256: which to use for a PHP login?
I'm making a php login, and I'm trying to decide whether to use SHA1 or Md5, or SHA256 which I read about in another stackoverflow article. Are any of them more secure than others? For SHA1/256, do I still use a salt?
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MySQL: Invalid use of group function
...s MySQL selects. Then MySQL groups the rows together and aggregates the numbers for your COUNT function.
HAVING is like WHERE, only it happens after the COUNT value has been computed, so it'll work as you expect. Rewrite your subquery as:
( -- where that pid is in the set:
SELECT ...