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How to work with Git branches and Rails migrations
...
If you have a large database that you can't readily reproduce, then I'd recommend using the normal migration tools. If you want a simple process, this is what I'd recommend:
Before switching branches, rollback (rake db:rollback) to the state before the branch point....
When to use an object instance variable versus passing an argument to the method
... My gut reaction is to agree with David and H-MAn2. However I'm reading "clean code" by Robert c Martin and in chapter 3 he refactors code to move something from a method parameter to a member variable, because having lots of parameters is bad. On balance, I guess if your class only has a...
Detect network connection type on Android
... use TelephonyManager to detect network types. So the above should instead read:
/**
* Check if there is fast connectivity
* @param context
* @return
*/
public static boolean isConnectedFast(Context context){
ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CO...
Casting vs using the 'as' keyword in the CLR
...It's possible for the "if" to pass but then the cast to fail, if another thread changes the value of randomObject between the two.
If randomObject really should be an instance of TargetType, i.e. if it's not, that means there's a bug, then casting is the right solution. That throws an exception imme...
What are the primary differences between Haskell and F#? [closed]
...nt than the differences. Basically, you should use F# if you are on .NET already, Haskell otherwise. Also, OO and laziness mean that F# is closer to what you (probably) already know, so it is probably easier to learn.
Platform : Haskell has its own runtime, F# uses .NET. I don't know what the perfo...
Storing Image Data for offline web application (client-side storage database)
... stored using FileSystem API, reference kept in IndexedDB) polyfill
A Must read article on "How the browsers store IndexedDB data"
http://www.aaron-powell.com/web/indexeddb-storage
Note: FireFox uses SQLlite for the NOSQL IndexedDB. That might be the reason for the slow performance. (blobs stored ...
Determine if running on a rooted device
...e().exec(new String[] { "/system/xbin/which", "su" });
BufferedReader in = new BufferedReader(new InputStreamReader(process.getInputStream()));
if (in.readLine() != null) return true;
return false;
} catch (Throwable t) {
return false;
...
Tools to selectively Copy HTML+CSS+JS From A Specific Element of DOM [closed]
...oving unnecessary attributes, fixing indentation)
optimizes CSS to make it readable
fully configurable (all filters can be turned off)
works with ::before and ::after pseudo-elements
nice UI thanks to Bootstrap & Flat-UI projects
Code
SnappySnippet is open source, and you can find the code on...
AutoMapper vs ValueInjecter [closed]
Everytime I'm looking for AutoMapper stuff on StackOverflow, I'm reading something about ValueInjecter .
4 Answers
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Is there a naming convention for MySQL?
...ueries in a short amount of time is better having all simple to write (and read).
Avoid prefixes. Unless you are using the same database for tables of different applications, don't use prefixes. This only add more verbosity to your queries. There are situations when this could be useful, for example...