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Convert light frequency to RGB?
... in RGB (bright oranges being a good example) because you cannot "make" arbitrary colours of light by adding three primary colours together, whatever our physics teachers may have told us (well mine did). Too bad, but in practice not usually fatal.
– Francis Davey
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Windows equivalent to UNIX pwd
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This prints it in the console:
echo %cd%
or paste this command in CMD, then you'll have pwd:
(echo @echo off
echo echo ^%cd^%) > C:\WINDOWS\pwd.bat
share...
How do you make a LinearLayout scrollable?
I have lot of items on the screen and I need to use the scrollbar so the user can scroll down. However, the scroll is either not visible or it's not working. How is it possible to add a scrollbar to a LinearLayout ?
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getSupportActionBar from inside of Fragment ActionBarCompat
...brary. I'm trying to figure out how to use the getSupportActionBar from within a fragment. My activity that hosts the fragment extends ActionBarActivity , but I don't see a similar support class for Fragments.
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How to read data when some numbers contain commas as thousand separator?
...ve a csv file where some of the numerical values are expressed as strings with commas as thousand separator, e.g. "1,513" instead of 1513 . What is the simplest way to read the data into R?
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IIS does not list a website that matches the launch url
I need to debug the website i 'm developing (ASP.NET MVC3, Razor, .NET 4, VS2010 SP1
(as administrator)) in IIS7 (Vista Home) and getting the error:
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Animated loading image in picasso
...t seem to support this, only static image drawables. Is there a way to get it working with Picasso or do I have to do something different?
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Jackson serialization: ignore empty values (or null)
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You have the annotation in the wrong place - it needs to be on the class, not the field. i.e:
@JsonInclude(Include.NON_NULL) //or Include.NON_EMPTY, if that fits your use case
public static class Request {
// ...
}
As noted in comments, in versions below 2.x the ...
Converting integer to binary in python
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{} places a variable into a string
0 takes the variable at argument position 0
: adds formatting options for this variable (otherwise it would represent decimal 6)
08 formats the number to eight digits zero-padded on the left
b converts the number to its binary representation
If you're using a...
How does Python's super() work with multiple inheritance?
...e
understanding the super() function (new style classes) especially when it comes to multiple inheritance.
16 Answers
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