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ArrayList vs List in C#
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Using List<T> you can prevent casting errors. It is very useful to avoid a runtime casting error.
Example:
Here (using ArrayList) you can compile this code but you will see an execution error later.
ArrayList array1 = new ArrayList();
array1.Add(1);
array1.Add...
How to log cron jobs?
... in
/var/log/syslog, as already mentioned by @Matthew Lock.
The logging of errors AFTER the program tried to execute, which can be sent to
an email or to a file, as mentioned by @Spliffster. I prefer logging
to a file, because with email THEN you have a NEW source of
problems, and its checking if em...
Error message 'Unable to load one or more of the requested types. Retrieve the LoaderExceptions prop
...rom Visual Studio. But how about if you're web application only throw this error on the production server? even after you set the Copy Local attribute to true.
– Yousi
Oct 16 '14 at 4:47
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How do I check if a string is valid JSON in Python?
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You can try to do json.loads(), which will throw a ValueError if the string you pass can't be decoded as JSON.
In general, the "Pythonic" philosophy for this kind of situation is called EAFP, for Easier to Ask for Forgiveness than Permission.
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What is the command to exit a Console application in C#?
... is cleaner because it gives the underlying operating system a more useful error code why it is exiting.
– Fayssal El Mofatiche
Nov 8 '17 at 8:23
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Does VBA have Dictionary Structure?
...lic Function Contains(col As Collection, key As Variant) As Boolean
On Error Resume Next
col(key) ' Just try it. If it fails, Err.Number will be nonzero.
Contains = (Err.Number = 0)
Err.Clear
End Function
Edit 24 June 2015: Shorter Contains() thanks to @TWiStErRob.
Edit 25 Septemb...
GitHub “fatal: remote origin already exists”
...ng to follow along Michael Hartl's Rails tutorial but I've run across an error.
19 Answers
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The Web Application Project […] is configured to use IIS. The Web server […] could not be found.
...right-click on the web project and reload the project, I get the following error:
25 Answers
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Access is denied when attaching a database
... Running Management Studio as administrator did NOT work for me. This error occurs when attempting to start the windows service.
– nuzzolilo
Dec 10 '13 at 19:58
9
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Git: can't undo local changes (error: path … is unmerged)
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Typical error when trying a checkout in the midst of a merge: $ git co path/to/file =result=> error: path 'path/to/file' is unmerged => so, first run: $ git reset path/to/file, and then the git checkout path/to/file should ...