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Timertask or Handler
...osting through the handler
handler.post(runnableCode);
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Handler vs Timer : fixed-period execution and fixed-rate execution android development
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Process escape sequences in a string in Python
...nterpretation of backslash escapes depends on how the string is quoted ("" vs r"" vs u"", triple quotes, etc) so you may want to wrap the user input in suitable quotes and pass to literal_eval. Wrapping it in quotes will also prevent literal_eval from returning a number, tuple, dictionary, etc.
Thi...
Do sealed classes really offer performance Benefits?
...s do not perform better than non-sealed.
The issue comes down to the call vs callvirt IL op codes. Call is faster than callvirt, and callvirt is mainly used when you don't know if the object has been subclassed. So people assume that if you seal a class all the op codes will change from calvirts to...
Conditional compilation and framework targets
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Thanks for answer, but now VS2010 already includes a new tag named "TargetFrameworkVersion" , now for each property group with condition, only TargetFrameworkVersion is changed, do we still need to all these to make it work?
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Hash function that produces short hashes?
...e a 10 characters hash you get higher entropy if it is encoded with base64 vs base16 (or hex). How higher? With base16 you get 4 bits of information per character, with base64 this figure is 6bits/char. Totaly a 10 char "hex" hash will have 40bits of entropy while a base64 60bits. So it is slightly ...
Haskell, Lisp, and verbosity [closed]
...rious how "pleasant" (to use a horrid term) it is to write code in Haskell vs. Lisp.
8 Answers
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Is there any difference between GROUP BY and DISTINCT
...me execution plan.
http://sqlmag.com/database-performance-tuning/distinct-vs-group
Maybe there is a difference, if there are sub-queries involved:
http://blog.sqlauthority.com/2007/03/29/sql-server-difference-between-distinct-and-group-by-distinct-vs-group-by/
There is no difference (Oracle-styl...
What's the equivalent for eclipse's ALT+UP/DOWN (move line) in Visual Studio?
... + UP/DOWN will move a line up or down.
If you need this functionality in VS2012 (works with VS2010 too), take a look at the MoveLine Visual Studio Extension or the Productivity Power Tools suite.
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What are the differences between Autotools, Cmake and Scons?
... like out of a PPA, or their distribution vendor. "Normal" users aren't devs and aren't grabbing tarballs in many cases. That's snobbery on everyone's part for presuming that is going to be the case there. The typical users for tarballs are devs doing things, so they're going to get slammed with ...
Disabling highlighting of current line in the Visual Studio editor
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At least on my machine (VS2013), turning off the annoying highlight bar significantly sped up the scrolling speed - or at least changed from snail-speed to only slow. Changing the color of the bar probably wouldn't do that.
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