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When to use volatile with multi threading?
...ogram stuck in optimized mode but runs normally in -O0 is an example (with description of GCC's asm output) of how exactly this happens with GCC on x86-64. Also MCU programming - C++ O2 optimization breaks while loop on electronics.SE shows another example.
We normally want aggressive optimization...
What is the purpose of Flask's context stacks?
...nded for. "Internal redirects" are the only justification I've seen in the descriptions above, and googling "flask internal redirect" doesn't turn up much so I'm still a bit at a loss. One of the things I like about flask is it's generally not a java object-soup type thing full of AbstractProviderCo...
What is a correct mime type for docx, pptx etc?
...: "application/vnd.irepository.package+xml", "jad": "text/vnd.sun.j2me.app-descriptor", "jar": "application/java-archive", "class": "application/java-vm", "jnlp": "application/x-java-jnlp-file", "ser": "application/java-serialized-object", "java": "text/x-java-source,java", "js": "application/javasc...
Comparison between Corona, Phonegap, Titanium
...
Just played with 1.7, your description is so right. This platform is very hit and miss, with horrible performance and countless hours of work around searching. If you have the resources at the start of a project, build native for each platform.
...
What are metaclasses in Python?
...ifferent ability, it can also create classes on the fly. type can take the description of a class as parameters,
and return a class.
(I know, it's silly that the same function can have two completely different uses according to the parameters you pass to it. It's an issue due to backward
compatibil...
Git and Mercurial - Compare and Contrast
...s are something that doesn't exist in git. It's simply a field in the cset description (and that is part of the history, so it is immutable unless you changes hashes, etc.). Something like git branches are bookmarks ("named heads") but they aren't currently remote transferrable (you don't import th...
Python base64 data decode
... it without importing anything:
'eW91ciB0ZXh0'.decode('base64')
or more descriptive
>>> a = 'eW91ciB0ZXh0'
>>> a.decode('base64')
'your text'
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Split string into an array in Bash
...Expansion is really an execution event. Furthermore, I take issue with the description of the $IFS variable that I just quoted above; rather than saying that word splitting is performed after expansion, I would say that word splitting is performed during expansion, or, perhaps even more precisely, w...
What are the differences between virtual memory and physical memory?
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This is a great, in depth description of VM/paging (should be a blog post somewhere). The one part of VM mapping/paging that confuses me is that it still requires (seemingly) a lot of disk accesses for every page fault or swap. Does each page swap (fr...
What are the undocumented features and limitations of the Windows FINDSTR command?
...ected to a file or piped. See the 2018-08-18 edit in Aacini's answer for a description of the buggy behavior when output is redirected to CON.
Most control characters and many extended ASCII characters display as dots on XP
FINDSTR on XP displays most non-printable control characters from matching l...