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How important is the order of columns in indexes?
...DE. This becomes more important as the size of Least column increases. The idea is that this index can only benefit queries that specify MostSelective either as an exact value or a range, and that column being the most selective it already restricts the candidate rows to great extent.
On the other ...
DateTime vs DateTimeOffset
...you asked me to convert calendar time to instantaneous time, but I have no idea where this came from, so I'm just going to use the local calendar." This is a huge gotcha if you load up an unspecified DateTime on a computer with a different timezone. (IMHO - that should throw an exception - but it ...
Why do we need fibers
...programs yet, but it's a good concept to know.
I hope this gives you some idea of the possibilities. As I said at the beginning, fibers are a low-level flow-control primitive. They make it possible to maintain multiple control-flow "positions" within your program (like different "bookmarks" in the ...
Skip List vs. Binary Search Tree
...ntation.
I think it's perhaps also worth summarizing here the fundamental ideas
of the "no hot spot"/contention-friendly (CF) skip list. It addapts an essential idea from the relaxed RB trees (and similar concrrency friedly data structures): the towers are no longer built up immediately upon insert...
Calendar Recurring/Repeating Events - Best Storage Method
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This is amazing, thank you! Do you have any idea how you'd encode "every 2 months on the first Monday" or "every 3 months on the first Monday", etc.?
– Jordan Lev
Sep 30 '13 at 3:33
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Get type of all variables
...great lengths to try to read your mind and do something reasonable.
The idea is that when newbie programmers write R programs via Brownian motion, as they will, they attempt to pass a googah.blimflarg into a vehicle.subspaceresponder(...). Instead of puking a type-error, the R program does gymna...
How to Implement DOM Data Binding in JavaScript
... as strictly educational. I'm still interested in hearing new answers and ideas to implement this
15 Answers
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Override Java System.currentTimeMillis for testing time sensitive code
... bite the bullet and refactor that legacy code to use a replaceable clock. Ideally that should be done with dependency injection, but even if you used a replaceable singleton you would gain testability.
This could almost be automated with search and replace for the singleton version:
Replace Cale...
Position icons into circle
...ble links as well? I want it to look like the picture below, but I have no idea how to achieve that effect.
8 Answers
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Git Symlinks in Windows
...need to be commited first, while git status says there are no changes..any idea?
– joreg
Oct 5 '11 at 22:45
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