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How do RVM and rbenv actually work?
I am interested in how RVM and rbenv actually work.
5 Answers
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What is the rationale for fread/fwrite taking size and count as arguments?
We had a discussion here at work regarding why fread and fwrite take a size per member and count and return the number of members read/written rather than just taking a buffer and size. The only use for it we could come up with is if you want to read/write an array of structs which aren't evenly div...
JUnit confusion: use 'extends TestCase' or '@Test'?
...) of JUnit very confusing.
This question serves both as a future reference and as a real question.
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An invalid form control with name='' is not focusable
...runs into the problem of an inaccessible form as one can't submit the form and doesn't get any message from the browser or site. Preventing validation altogether via 'novalidate' is no correct answer as clientside validation should support user inputs. Changing the website is the solution.
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Unit tests vs Functional tests
What is the difference between unit tests and functional tests? Can a unit test also test a function?
14 Answers
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XPath to select multiple tags
...cal-name()='c' or local-name()='d' or local-name()='e']
is both too-long and incorrect. This XPath expression will select nodes like:
OhMy:c
NotWanted:d
QuiteDifferent:e
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What exactly is an “open generic type” in .NET? [duplicate]
I was going through Asp.Net MVC lesson and learned that, for a method to qualify as an action for a controller,
4 Answer...
What's the difference between a catalog and a schema in a relational database?
... other things--all of the various schemas (external, conceptual, internal) and all of the corresponding mappings (external/conceptual, conceptual/internal) are kept.
In other words, the catalog contains detailed information (sometimes called descriptor information or metadata) regarding the va...
Why is std::map implemented as a red-black tree?
...bly the two most common self balancing tree algorithms are Red-Black trees and AVL trees. To balance the tree after an insertion/update both algorithms use the notion of rotations where the nodes of the tree are rotated to perform the re-balancing.
While in both algorithms the insert/delete operat...
std::string to char*
... The answer is bulky, inelegant, non-local, uses raw arrays, and requires attention to exception safety. vector was invented precisely as a wrapper for dynamic arrays, so not using it seems like a missed opportunity at best, and in violation of the spirit of C++ at worst.
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