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How do you calculate log base 2 in Java for integers?
... log[10]2
just plug this into the java Math log10 method....
http://mathforum.org/library/drmath/view/55565.html
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Where does 'Hello world' come from?
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From http://en.wikipedia.org/wiki/Hello_world_program:
The first known instance of the usage
of the words "hello" and "world"
together in computer literature
occurred earlier, in Kernighan's 1972
Tutorial Introduction ...
Which is best way to define constants in android, either static class, interface or xml resource?
...2017.
*/
public class Constant {
public static final String SERVER = "http://192.168.0.100/bs.dev/nrum";
// public static final String SERVER = "http://192.168.100.2/bs.dev/nrum";
public static final String API_END = SERVER + "/dataProvider";
public static final String NEWS_API = API...
Can Retrofit with OKHttp use cache data when offline
I'm trying to use Retrofit & OKHttp to cache HTTP responses. I followed this gist and, ended up with this code:
6 Answers...
“unadd” a file to svn before commit
...erted, Subversion provides no way to get back those uncommitted changes.
http://svnbook.red-bean.com/en/1.7/svn.ref.svn.c.revert.html
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A clean, lightweight alternative to Python's twisted? [closed]
...ou're right about that. Twisted is not bloated.
If you take a look here: http://twistedmatrix.com/trac/browser/trunk/twisted you'll find an organized, comprehensive, and very well tested suite of many protocols of the internet, as well as helper code to write and deploy very sophisticated network ...
Create Django model or update if exists
...ase refer to @Zags excellent answer
Django already has a get_or_create, https://docs.djangoproject.com/en/dev/ref/models/querysets/#get-or-create
For you it could be :
id = 'some identifier'
person, created = Person.objects.get_or_create(identifier=id)
if created:
# means you have created a...
地图组件（高德地图） · App Inventor 2 中文网
...每个块对应一个特定的URL。
默认高德地图简图模式：https://wprd01.is.autonavi.com/appmaptile?x={x}&y={y}&z={z}&style=7
可调整地图样式，变量说明如下：
域名前缀(wprd,webst)：效果一样，目前还没有找出规律。01 ~ 04 随意都可以，负载均衡...
Implementing comparison operators via 'tuple' and 'tie', a good idea?
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What is a unix command for deleting the first N characters of a line?
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