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Rails Observer Alternatives for 4.0
With Observers officially removed from Rails 4.0 , I'm curious what other developers are using in their place. (Other than using the extracted gem.) While Observers were certainly abused and could easily become unwieldily at times, there were many use-cases outside of just cache-clearing where they...
new keyword in method signature
...);
public new void Two();
}
B b = new B();
A a = b as A;
a.One(); // Calls implementation in B
a.Two(); // Calls implementation in A
b.One(); // Calls implementation in B
b.Two(); // Calls implementation in B
Override can only be used in very specific cases. From MSDN:
You cannot overrid...
Popstate on page's load in Chrome
I am using History API for my web app and have one issue.
I do Ajax calls to update some results on the page and use history.pushState() in order to update the browser's location bar without page reload. Then, of course, I use window.popstate in order to restore previous state when back-button i...
Argmax of numpy array returning non-flat indices
...rray([0]), array([2]))
This, comparing to argmax, returns coordinates of all elements equal to the maximum. argmax returns just one of them (np.ones(5).argmax() returns 0).
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Checkout multiple git repos into same Jenkins workspace
... to create a branch build, you would have to clone 4 jobs and then individually change the paths for each one. There are of course plugins to help with this, but it's easier to just checkout to a relative path from a single job. Then you can clone as much as you want without changing settings.
...
Why this line xmlns:android=“http://schemas.android.com/apk/res/android” must be the first in the la
...u do:
<LinearLayout android:id>
</LinearLayout>
Instead of calling android:id, the xml will use http://schemas.android.com/apk/res/android:id to be unique. Generally this page doesn't exist (it's a URI, not a URL), but sometimes it is a URL that explains the used namespace.
The names...
How to normalize a path in PowerShell?
...WINDOWS\system32\fred\frog\..\frag
With an absolute base, it is safe to call the .NET API GetFullPath:
[System.IO.Path]::GetFullPath((Join-Path (Join-Path (pwd) fred\frog) '..\frag'))
Which gives you the fully qualified path and with the .. removed:
C:\WINDOWS\system32\fred\frag
It's not com...
Send POST request using NSURLSession
...;
[request setHTTPMethod:@"POST"];
NSDictionary *mapData = [[NSDictionary alloc] initWithObjectsAndKeys: @"TEST IOS", @"name",
@"IOS TYPE", @"typemap",
nil];
NSData *postData = [NSJSONSerialization dataWithJSONObject:mapData options:0 error:&error];
[re...
Generating a list of which files changed between hg versions
... consider using the "x::y" (DAG - Directed Acyclic Graph) range.
Given parallel changesets,
1--2---4
\---3
hg status --rev 1:4 would return (1,2,3,4),
i.e. anything between and including the endpoints, according to the local, numerical rev. This might (and most probably will) return different...
How to make an Android device vibrate?
... edited Oct 17 '18 at 9:54
vallentin
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answered Dec 19 '12 at 10:33
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