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std::wstring VS std::string
... than the same UTF-16 one.
Still, for other languages (chinese, japanese, etc.), the memory used will be either the same, or slightly larger for UTF-8 than for UTF-16.
All in all, UTF-16 will mostly use 2 and occassionally 4 bytes per characters (unless you're dealing with some kind of esoteric la...
Difference between HashSet and HashMap?
...as others have pointed out. What they are, respectively, are a Set - an unordered collection - and a Map - a collection with keyed access. They happen to be implemented with hashes - that's where the names come from - but their essence is hidden behind that part of their names.
Don't be confused ...
Why static classes cant implement interfaces? [duplicate]
...e raw data access ( TestRepository , SqlRepository , FlatFileRepository etc).
Because such a repository would be used throughout the runtime of my application it seemed like a sensible thing to me to make it a static class so I could go
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Finding ALL duplicate rows, including “elements with smaller subscripts”
... duplicated. Once that is done you can use Duplicated column for filtering etc.
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How to redirect to previous page in Ruby On Rails?
...@pSkarl How can I pass a notice object with the redirect_back statement in order to tell the user something went wrong with a flash message?
– alexventuraio
Dec 12 '16 at 5:54
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get all keys set in memcached
... will asynchronously dump as many keys as you want. you'll get them out of order but it hits all LRU's, and unless you're deleting/replacing items multiple runs should yield the same results.
Source: GH-405.
Related:
List all objects in memcached
Writing a Redis client in pure bash (it's Redis, b...
SQL exclude a column using SELECT * [except columnA] FROM tableA?
...SCHEMA.COLUMNS
WHERE TABLE_NAME = 'contact' AND COLUMN_NAME <> 'dob'
ORDER BY ORDINAL_POSITION
EXEC ('SELECT ' + @columns + ' FROM contact')
Explanation of the code:
Declare a variable to store a comma separated list of column names. This defaults to NULL.
Use a system view to determine t...
Is Unit Testing worth the effort? [closed]
...'m involved with doesn't Unit Test well (web application user interactions etc.), but even so we're all test infected in this shop, and happiest when we've got our tests tied down. I can't recommend the approach highly enough.
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iOS 7 UIBarButton back button arrow color
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Depending on the order of subviews of system views is a bad idea.
– Glenn Maynard
Nov 12 '13 at 16:10
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To switch from vertical split to horizontal split fast in Vim
...ubled today, thank you. There are a ton of interesting ^w commands (b, w, etc)
– Alex Hart
Dec 7 '12 at 14:10
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