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What is the difference between ? and Object in Java generics?
... some code to use Java generics properly. Most of the time it's doing an excellent job of inferring types, but there are some cases where the inferred type has to be as generic as possible: Object. But Eclipse seems to be giving me an option to choose between a type of Object and a type of '?'.
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Auto-loading lib files in Rails 4
...Foo::Bar
end
if you really wanna do some monkey patches in file like lib/extensions.rb, you may manually require it:
in config/initializers/require.rb:
require "#{Rails.root}/lib/extensions"
P.S.
Rails 3 Autoload Modules/Classes by Bill Harding.
And to understand what does Rails exactly do...
Git push/clone to new server
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git remote add name url
git push name branch
Example:
git remote add origin git@github.com:foo/bar.git
git push origin master
See the docs for git push -- you can set a remote as the default remote for a given branch; if you don't, the name origin is special. Just git...
Can I use my existing git repo with openshift?
...understand how to push your code to openshift. Nevertheless let me try to explain you the steps involved:
As you'd do with git in general, the approach to choose here is to clone your other git repo (ex. on bitbucket) to your local machine:
git clone <bitbucket-repo-url>
Your local clone ha...
How to raise a ValueError?
I have this code which finds the largest index of a specific character in a string, however I would like it to raise a ValueError when the specified character does not occur in a string.
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How do I enter RGB values into Interface Builder?
How can I enter RGB or Hex color values for backgrounds in Interface Builder? I can select predefined colors but I would like to manually enter in RGB values. Where can I do this?
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Inspect element that only appear when other element is mouse overed/entered
...rds a portion of the screen directly in a super-optimized GIF. Windows, OS X and Linux.
– fregante
Jul 17 '14 at 7:26
2
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Expand/collapse section in UITableView in iOS
Could somebody tell me the way to perform UITableView expandable/collapsible animations in sections of UITableView as below?
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Fragment or Support Fragment?
... older fragment implementation in 4.0, like this one , that are already fixed in the support library, I am considering switching back to the fragment implementation from the support library to get a more reliable and consistent implementation.
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Using i and j as variables in Matlab
...r j will override them, potentially silently breaking code that does complex maths.
Possible solutions include using ii and jj as loop variables instead, or using 1i whenever i is required to represent the imaginary unit.
s...