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What is the difference between UTF-8 and ISO-8859-1?
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UTF-8 is a multibyte encoding that can represent any Unicode character. ISO 8859-1 is a single-byte encoding that can represent the first 256 Unicode characters. Both encode ASCII exactly the same way.
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Dynamic SQL - EXEC(@SQL) versus EXEC SP_EXECUTESQL(@SQL)
...p_executesql generates execution plans that are more likely to be
reused by SQL Server, sp_executesql is more efficient than EXECUTE.
So, the take away: Do not use execute statement. Use sp_executesql.
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What's the difference between an inverted index and a plain old index?
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The index in the back of a book is actually an inverted index, as defined by the examples above - a list of words, and where to find them in the book. In a book, the table of contents is like a forward index: it's a list of documents (chapters) which the book contains, except instead of listing the...
Why doesn't the height of a container element increase if it contains floated elements?
...s float exactly and what does it do?
The float property is misunderstood by most beginners. Well, what exactly does float do? Initially, the float property was introduced to flow text around images, which are floated left or right. Here's another explanation by @Madara Uchicha. So, is it wrong to ...
How do you access command line arguments in Swift?
...wift Argument Parser
https://github.com/apple/swift-argument-parser
Begin by declaring a type that defines the information you need to collect from the command line. Decorate each stored property with one of ArgumentParser's property wrappers, and declare conformance to ParsableCommand.
The Argumen...
How do I put two increment statements in a C++ 'for' loop?
...s parsed (x=i++),a++ and not x=(i++, a++). That characteristic is misused by some libraries so that v = 1,2,3; does the intuitive things, but only because v = 1 returns a proxy object for which the overloaded comma operator does an append.
– AProgrammer
Aug 5 ...
What is the difference between LR, SLR, and LALR parsers?
...orth optimizing; the places where the LR parser would be better is handled by ad hoc checking outside the parser.
So: All three use the same machinery. SLR is "easy" in the sense that you can ignore a tiny bit of the machinery but it is just not worth the trouble. LR parses a broader set of langau...
What exactly is Apache Camel?
...s, I generally recommend people to read this Integration with Apache Camel by Jonathan Anstey. It's a well written piece which gives a brief introduction to and overview of some of Camel's concepts, and it implements a use case with code samples. In it, Jonathan writes:
Apache Camel is an open s...
Remove empty space before cells in UITableView
... IB's attribute inspector (when a view controller is selected) which is on by default. Uncheck this option:
(Image courtesy of Dheeraj D)
I'm not sure which Xcode version introduced this option (didn't spot it in the release notes), but it's at least available in version 5.1.1.
Edit: To avoid c...
Type erasure techniques
...and will use the type of the actual object passed for creating the deleter by default:
{
const shared_ptr<void> sp( new A );
} // calls A::~A() here
Of course, this is just the usual void*/function-pointer type erasure, but very conveniently packaged.
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