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Downcasting shared_ptr to shared_ptr?

Update: the shared_ptr in this example is like the one in Boost, but it doesn't support shared_polymorphic_downcast (or dynamic_pointer_cast or static_pointer_cast for that matter)! ...
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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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How can I delete the current line in Emacs?

What is the emacs equivalent of vi's dd ? I want to delete the current line. Tried CTRL + k but it only deletes from current position. ...
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Git pull after forced update

I just squashed some commits with git rebase and did a git push --force (which is evil, I know). 3 Answers ...
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Undo git stash pop that results in merge conflict

I began making changes to my codebase, not realizing I was on an old topic branch. To transfer them, I wanted to stash them and then apply them to a new branch off of master. I used git stash pop to transfer work-in-progress changes to this new branch, forgetting that I hadn't pulled new changes i...
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Inspect element that only appear when other element is mouse overed/entered

Often I want to inspect an element (e.g. tooltip) that only appears when another element is mouse overed/entered. The element that appears, is made visible via jQuery's mouseenter event. ...
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How can I list ALL grants a user received?

I need to see all grants on an Oracle DB. 6 Answers 6 ...
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Why use @PostConstruct?

In a managed bean, @PostConstruct is called after the regular Java object constructor. 5 Answers ...
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See line breaks and carriage returns in editor

Does anyone know of a text editor on Linux that allows me to see line breaks and carriage returns? Does Vim support this feature? ...
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Django - how to create a file and save it to a model's FileField?

Here's my model. What I want to do is generate a new file and overwrite the existing one whenever a model instance is saved: ...