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What does the constant 0.0039215689 represent?
...mance reasons.
Multiplying by the reciprocal is faster than repeatedly dividing by 255.
Side Note:
If you're wondering why such a micro-optimization isn't left to the compiler, it's because it is an unsafe floating-point optimization. In other words:
x / 255 != x * (1. / 255)
due to floati...
Packing NuGet projects compiled in release mode?
...an only be modified in the project file directly (no VS GUI option). To avoid the command-line property tweak for all future nuget pack calls, edit the project file XML in your favorite text editor.
– patridge
Jun 30 '11 at 22:07
...
Android map v2 zoom to show all the markers
...rlier version this can be achieved from zoomToSpan() but in v2 I have no idea how about doing that. Further, I know the radius of the circle that needs to be visible.
...
How to revert a folder to a particular commit by creating a patch
... var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
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Build.scala, % and %% symbols meaning
...endencies
Getting the right Scala version with %%
If you use groupID %% artifactID % revision instead of groupID % artifactID % revision (the difference is the double %% after the
groupID), SBT will add your project’s Scala version to the artifact
name. This is just a shortcut.
Y...
How to import module when module name has a '-' dash or hyphen in it?
...
you can't. foo-bar is not an identifier. rename the file to foo_bar.py
Edit: If import is not your goal (as in: you don't care what happens with sys.modules, you don't need it to import itself), just getting all of the file's globals into your own scop...
How to convert index of a pandas dataframe into a column?
...
To provide a bit more clarity, let's look at a DataFrame with two levels in its index (a MultiIndex).
index = pd.MultiIndex.from_product([['TX', 'FL', 'CA'],
['North', 'South']],
...
How does bash tab completion work?
...st of possible completions, and readline inserts as much characters as are identified unambiguously by the characters already typed in. (You can configure the readline library quite much, see the section Command line editing of the Bash manual for details.)
Bash itself has the built-in complete to d...
How is Racket different from Scheme?
Racket is a descendant of Scheme. How is Racket different than R6RS? What did it add, or take away, or is just different?
6...
Can you write nested functions in JavaScript?
...example. I would add that it's important to note that functions defined inside other functions only exist in that functions scope (unless, of course, you assign a global function to it, as per this example).
– Mike Sherov
Jul 9 '10 at 12:27
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