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MongoDB or CouchDB - fit for production? [closed]
...ction.
businessinsider has been using mongo in production for over a year now. They are using it for everything from users and blog posts, to every image on the site.
shopwiki is using it for a few things including real time analytics and a caching layer. They are doing over 1000 writes per secon...
Does Java have a using statement?
...
"Luckily" with Java 7 being available now, this answer is no longer true (and I think that ARM blocks are exactly what using does).
– Joachim Sauer
Aug 24 '11 at 8:32
...
How to use UIScrollView in Storyboard
...ould like to be able to lay it out for easy design on the storyboard.
I know it can be done programmatically but I really want to be able to see it visually. Every time I put a scroll view on a view controller it won't scroll. Is it possible to get it to work like I want or do I have to do it in t...
搭建高可用mongodb集群（二）—— 副本集 - 大数据 & AI - 清泛网 - 专注C/...
...
rs.initiate(config);
#输出成功
{
"info" : "Config now saved locally. Should come online in about a minute.",
"ok" : 1
}
#查看日志，副本集启动成功后，138为主节点PRIMARY，136、137为副本节点SECONDARY。
Sun Dec 29 20:26:13.842 [conn3]...
How can I change my Cygwin home folder after installation?
...PROFILE%
Click OK in all the open dialog boxes to apply this new setting
Now we are going to update the Cygwin /etc/passwd file with the Windows %HOME% variable we just created. Shell logins and remote logins via ssh will rely on /etc/passwd to tell them the location of the user's $HOME path.
At ...
Expand a random range from 1–5 to 1–7
... sampling, e.g.:
int i;
do
{
i = 5 * (rand5() - 1) + rand5(); // i is now uniformly random between 1 and 25
} while(i > 21);
// i is now uniformly random between 1 and 21
return i % 7 + 1; // result is now uniformly random between 1 and 7
This has an expected runtime of 25/21 = 1.19 itera...
Interface defining a constructor signature?
...far:
public interface IDrawable
{
void Update();
void Draw();
}
Now create an abstract class with the constructor you want to enforce. Actually, since it's now available since the time you wrote your original question, we can get a little fancy here and use generics in this situation so ...
How to make a promise from setTimeout
...ions for resolving/rejecting the promise as arguments.
First, since async now has a meaning in JavaScript (even though it's only a keyword in certain contexts), I'm going to use later as the name of the function to avoid confusion.
Basic Delay
Using native promises (or a faithful polyfill) it wou...
How to write LaTeX in IPython Notebook?
...doing, found a better solution with some more searching, IPython notebooks now have a %%latex magic that makes the whole cell Latex without the $$ wrapper for each line.
Refer notebook tour for Rich Display System
share
...
Node.js check if file exists
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Anyone reading this now (Node.js v0.12.x) keep in mind that fs.exists and fs.existsSync have also been deprecated. The best way to check file existence is fs.stat, as demoed above.
– Antrikshy
Mar 29 '15 at...