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How to check if object (variable) is defined in R?
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@tim if you are inside a function, missing() is what you want.
– CousinCocaine
Jan 27 '14 at 14:31
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How to undo “git commit --amend” done instead of “git commit”
...d have been separate to keep history of the changes I made to a particular file.
11 Answers
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Unicode character as bullet for list-item in CSS
...u’re sending an additional HTTP request to fetch the image and the total file increases as you load an image for something that could just be done through the use of a single Unicode character.
– Mathias Bynens
Jul 6 '11 at 5:22
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Best way to work with transactions in MS SQL Server Management Studio
...raint violation error.
DELETE FROM Production.Product
WHERE ProductID = 980;
END TRY
BEGIN CATCH
SELECT
ERROR_NUMBER() AS ErrorNumber
,ERROR_SEVERITY() AS ErrorSeverity
,ERROR_STATE() AS ErrorState
,ERROR_PROCEDURE() AS ErrorProcedure
,ERROR_LINE(...
Comparing Timer with DispatcherTimer
...al, WPF == DispatcherTimer and Windows Forms == Forms.Timer.
That being said, there is also System.Threading.Timer, which is a timer class that fires on a separate thread. This is good for purely numerical timing, where you're not trying to update the UI, etc.
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What is the difference between `after_create` and `after_save` and when to use which?
...aborate? Note that after_commit runs on create, updat and destroy. Docs: apidock.com/rails/ActiveRecord/Transactions/ClassMethods/… So it is not the same behavior as after_save You really want to call that cron_job after after destroying the record? Or in the ops case, send an email to a now delet...
Python Mocking a function from an imported module
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Where did test_patch come from, what is it exactly?
– Mike G
Nov 16 '13 at 6:12
2
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Difference between $state.transitionTo() and $state.go() in Angular ui-router
...oad is not an option as the view is an overlay
– Swanidhi
Mar 16 '15 at 7:06
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Use different Python version with virtualenv
...aking your package management by clobbering something and leaving dangling files all over the place. I like this answer.
– RobotHumans
Dec 29 '13 at 14:02
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Good Hash Function for Strings
... I got the hashed string as a lot of junk UTF characters when I opened the file in LibreOffice. Is it possible to get the hashed string as a random bunch of alphanumeric characters instead of junk UTF characters?
– Nav
Nov 13 '16 at 17:54
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