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Rails: FATAL - Peer authentication failed for user (PG::Error)
...seeing if postgres works, create a scaffold:
$ rails g scaffold cats name:string age:integer colour:string
3) As of rails 4.0.1 the -d postgresql option generates a YAML that doesn't include a host parameter. I found I needed this. Edit the development section and create the following parameters:...
How do I check if the Java JDK is installed on Mac?
How do you check if Java SDK is installed on a Mac?
8 Answers
8
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How do you detect where two line segments intersect? [closed]
...f r × s = 0 and (q − p) × r ≠ 0, then the two lines are parallel and non-intersecting.
If r × s ≠ 0 and 0 ≤ t ≤ 1 and 0 ≤ u ≤ 1, the two line segments meet at the point p + t r = q + u s.
Otherwise, the two line segments are not parallel but do not intersect....
Injecting a mock into an AngularJS service
...e.
If you have the following service with a dependency that has a method called getSomething:
angular.module('myModule', [])
.factory('myService', function (myDependency) {
return {
useDependency: function () {
return myDependency.getSomething();
}...
Makefile, header dependencies
...vided by the gnu preprocessor are a bit confusing. However, the removal of all directories from the build target with -MM is documented and not a bug [gpp]:
By default CPP takes the name of the main input file, deletes any
directory components and any file suffix such as ‘.c’, and appends ...
Is there a MySQL option/feature to track history of changes to records?
...ant to audit the changes to the data - who did what and when?", you can usually use audit tables (as per the trigger example Keethanjan posted). I'm not a huge fan of triggers, but it has the great benefit of being relatively painless to implement - your existing code doesn't need to know about the ...
How to create a circular ImageView in Android? [duplicate]
...fig.ARGB_8888);
Canvas canvas = new Canvas(output);
final String color = "#BAB399";
final Paint paint = new Paint();
final Rect rect = new Rect(0, 0, radius, radius);
paint.setAntiAlias(true);
paint.setFilterBitmap(true);
paint.setDither(true...
When should I use a List vs a LinkedList
...hin a list, it offers constant time. List<T> offers linear time, as extra items in the list must be shuffled around after the insertion/removal.
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vs. . Which to use?
...couple of bugs related to the
width of buttons. It'll mysteriously
add extra padding when you're trying
to add styles, meaning you have to add
a tiny hack to get things under
control.
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Exit a Script On Error
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@mouviciel, @Gilles: Thanks for the extra info. It's been a while since I dealt with bash.
– DGH
Dec 8 '10 at 1:37
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