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General guidelines to avoid memory leaks in C++ [closed]
What are some general tips to make sure I don't leak memory in C++ programs? How do I figure out who should free memory that has been dynamically allocated?
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Pointers in C: when to use the ampersand and the asterisk?
I'm just starting out with pointers, and I'm slightly confused. I know & means the address of a variable and that * can be used in front of a pointer variable to get the value of the object that is pointed to by the pointer. But things work differently when you're working with arrays, string...
Counting DISTINCT over multiple columns
...umentOutputItems;
This feature is mentioned in the MySQL documentation:
http://dev.mysql.com/doc/refman/5.7/en/group-by-functions.html#function_count-distinct
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What does “dereferencing” a pointer mean?
Please include an example with the explanation.
6 Answers
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psql: FATAL: role “postgres” does not exist
...not have any login password.
Check this site for more articles like this: https://medium.com/@Nithanaroy/installing-postgres-on-mac-18f017c5d3f7
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lose vim colorscheme in tmux mode
I'm running iterm2 and when I'm in tmux mode the colorscheme I have set in vim does not show up. Only the color scheme I've set in iterm. If I run vim from shell the colorscheme appears correct - its only when I'm in tmux mode.
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How to detect page zoom level in all modern browsers?
...e zoom level.
Edit (2011-12-12): I've added a project that can be cloned: https://github.com/tombigel/detect-zoom
IE8: screen.deviceXDPI / screen.logicalXDPI (or, for the zoom level relative to default zoom, screen.systemXDPI / screen.logicalXDPI)
IE7: var body = document.body,r = body.getBoundin...
When to use SELECT … FOR UPDATE?
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
byte[] to hex string [duplicate]
...d pre-build the translation table like so to achieve even faster results:
http://blogs.msdn.com/b/blambert/archive/2009/02/22/blambert-codesnip-fast-byte-array-to-hex-string-conversion.aspx
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What's the difference between ISO 8601 and RFC 3339 Date Formats?
...etter just reading the document for yourself in the event you're worried:
http://tools.ietf.org/html/rfc3339
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