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Putting an if-elif-else statement on one line?

...gt;> a = "Hello" if foo() else "Goodbye" Edit: Your revised question now shows that the three statements are identical except for the value being assigned. In that case, a chained ternary operator does work, but I still think that it's less readable: >>> i=100 >>> a = 1 if i...
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How do I use vimdiff to resolve a git merge conflict?

... I got Automatic merge failed; fix conflicts and then commit the result. Now I ran git mergetool and vimdiff opened with the image below. I don't know how to use vimdiff. What does each panel here mean and how should I proceed to fix the merge conflict? ...
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Null or default comparison of generic argument in C#

... @Jordan here's the IL for that - as you can see, it clearly boxes. Now, whether boxing is an issue for you is contextual. It clearly won't matter for your example since the program exits straight away. However, every box is an allocation. If you deal with anything non-trivial, avoiding unnec...
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Reset Entity-Framework Migrations

...ked up my migrations, I used IgnoreChanges on the initial migration, but now I want to delete all my migrations and start with an initial migration with all of the logic. ...
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How to edit incorrect commit message in Mercurial? [duplicate]

... Update: Mercurial has added --amend which should be the preferred option now. You can rollback the last commit (but only the last one) with hg rollback and then reapply it. Important: this permanently removes the latest commit (or pull). So if you've done a hg update that commit is no longer i...
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Select parent element of known element in Selenium

...her icons and texts --> <span>Close</span> </a> Now that you need to select parent tag 'a' based on <span> text, then use driver.findElement(By.xpath("//a[.//span[text()='Close']]")); Explanation: Select the node based on its child node's value ...
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How can I load storyboard programmatically from class?

... storyboard programmatically. Project was started developing with xib, and now it's very hard to nest all xib files in storyboard. So I was looking a way to do it in code, like with alloc, init, push for viewControllers. In my case I have only one controller in storyboard: UITableViewController ,...
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Counting inversions in an array

...14) 6 is in the 4th position of array B, thus there are 3 inversions. We know this because 6 was in the first position in array A, thus any lower value element that subsequently appears in array A would have an index of j > i (since i in this case is 1). 2.b: Remove A[1] from array A and also f...
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Error 5 : Access Denied when starting windows service

... is that, most services are run as LOCAL SERVICE or LOCAL SYSTEM accounts. Now when you run C:/my-admin-dir/service.exe with those accounts but they are not allowed to execute anything in that directory, you will get error 5. So locate the executable of the service, RMB the directory -> Propertie...
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What's the difference between isset() and array_key_exists()? [duplicate]

...ing out why a script was taking over 300s to execute. switched to isset(), now executes in less than 3s. – celwell Jul 12 '13 at 1:21 22 ...