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How to avoid Dependency Injection constructor madness?
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You are right that if you use the container as a Service Locator, it's more or less a glorified static factory. For lots of reasons I consider this an anti-pattern.
One of the wonderful benefits of Constructor Injection is that it makes violat...
How to get the body's content of an iframe in Javascript?
...me it's the best, easy readable and even afaik the shortest way to get the iframes content.
First get your iframe
var iframe = document.getElementById('id_description_iframe');
// or
var iframe = document.querySelector('#id_description_iframe');
And then use jQuery's solution
var iframeDocumen...
How to generate controller inside namespace in rails
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Try rails g controller admin/users if you want a users controller inside of the admin namespace. Of course, exchange users with whatever controller name that you'd like.
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Using NumberPicker Widget with Strings
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@ArulxZ If you haven't already figured this out, just call picker.setDescendantFocusability(ViewGroup.FOCUS_BLOCK_DESCENDANTS); to prevent the keyboard from popping up.
– Karim Varela
Jun 1 '15 ...
Xcode - How to fix 'NSUnknownKeyException', reason: … this class is not key value coding-compliant f
...ke sure that your object isn't still connected to the old property name... if it is, click the small 'x' to delete the reference and build again.
Another common cause if you are using Storyboard, your UIButton might have more then one assignings (Solution is almost the same as for nib):
Open ...
Removing a model in rails (reverse of “rails g model Title…”)
...del_name>
When you generate a model, it creates a database migration. If you run 'destroy' on that model, it will delete the migration file, but not the database table. So before run
bundle exec rake db:rollback
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Distinct not working with LINQ to Objects
...custom objects.
All it does is look at your list and see that it has two different objects (it doesn't care that they have the same values for the member fields).
One workaround is to implement the IEquatable interface as shown here.
If you modify your Author class like so it should work.
public...
What does the C++ standard state the size of int, long type to be?
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The C++ standard does not specify the size of integral types in bytes, but it specifies minimum ranges they must be able to hold. You can infer minimum size in bits from the required range. You can infer minimum size in bytes from that and the value of th...
How to add text at the end of each line in Vim?
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This will do it to every line in the file:
:%s/$/,/
If you want to do a subset of lines instead of the whole file, you can specify them in place of the %.
One way is to do a visual select and then type the :. It will fill in :'<,'> for you, then you type the rest of it ...
GraphViz - How to connect subgraphs?
... In case anyone is interested in, this can cause positioning problems if you have labelled links (edges). While the head or the tail of the edge may be hidden beneath a cluster, the label is still positioned at the midpoint, meaning some edge labels appear to be floating over a cluster instead ...