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Why do Python's math.ceil() and math.floor() operations return floats instead of integers?
...n's integers are now arbitrary precision, it wasn't always this way. The standard library functions are thin wrappers around the equivalent C library functions.
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Can I delete a git commit but keep the changes?
... changes on my development branch with a commit message "temporary commit" and then checkout master for the demo.
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Singleton pattern in nodejs - is it needed?
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This has basically to do with nodejs caching. Plain and simple.
https://nodejs.org/api/modules.html#modules_caching
(v 6.3.1)
Caching
Modules are cached after the first time they are loaded. This means
(among other things) that every call to require('foo') will ge...
Flexbox and Internet Explorer 11 (display:flex in ?)
I am planning to move away from "floaty" layouts and use CSS flexbox for future projects. I was delighted to see that all major browsers in their current versions seem to support (in one way or another) flexbox.
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Replacing a 32-bit loop counter with 64-bit introduces crazy performance deviations with _mm_popcnt_
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Culprit: False Data Dependency (and the compiler isn't even aware of it)
On Sandy/Ivy Bridge and Haswell processors, the instruction:
popcnt src, dest
appears to have a false dependency on the destination register dest. Even though the instruction only...
Making Python loggers output all messages to stdout in addition to log file
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All logging output is handled by the handlers; just add a logging.StreamHandler() to the root logger.
Here's an example configuring a stream handler (using stdout instead of the default stderr) and adding it to the root logger:
import logging
imp...
How to make ruler always be shown in Sublime text 2?
I use Sublime Text 2 and want a Ruler to be shown in every file with specific line-height. But I have to show it manually in every file.
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How to validate an email address using a regular expression?
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The fully RFC 822 compliant regex is inefficient and obscure because of its length. Fortunately, RFC 822 was superseded twice and the current specification for email addresses is RFC 5322. RFC 5322 leads to a regex that can be understood if studied for a few minutes and i...
Tab Vs Space preferences in Vim
...very accommodating when it comes to tab Vs. space preferences. As I understand it, the tabstop setting indicates the width of a tab character. The shiftwidth setting specifies how many columns to increment/decrement when using the << and >> commands, whereas the softtabstop set...
Git repository broken after computer died
My computer went dead and now one of my git repositories is broken. When I try to checkout master it tells me:
15 Answers
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