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Why is it faster to check if dictionary contains the key, rather than catch the exception in case it
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On the one hand, throwing exceptions is inherently expensive, because the stack has to be unwound etc.
On the other hand, accessing a value in a dictionary by its key is cheap, because it's a fast, O(1) operation.
BTW: The correct way to do this is to use TryGetValue
obj item;
if(!dict.Tr...
Is there a way to cause git-reflog to show a date alongside each entry?
The git-reflog command doesn't by default show a date alongside each entry, which strikes me as a strange oversight; I think this would be very helpful.
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Case statement with multiple values in each 'when' block
The best way I can describe what I'm looking for is to show you the failed code I've tried thus far:
3 Answers
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Custom sort function in ng-repeat
I have a set of tiles that display a certain number depending on which option is selected by the user. I would now like to implement a sort by whatever number is shown.
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How to get thread id from a thread pool?
I have a fixed thread pool that I submit tasks to (limited to 5 threads). How can I find out which one of those 5 threads executes my task (something like "thread #3 of 5 is doing this task")?
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How do I query using fields inside the new PostgreSQL JSON datatype?
I am looking for some docs and/or examples for the new JSON functions in PostgreSQL 9.2.
3 Answers
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How do I access named capturing groups in a .NET Regex?
I'm having a hard time finding a good resource that explains how to use Named Capturing Groups in C#. This is the code that I have so far:
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Can I have H2 autocreate a schema in an in-memory database?
...ready seen the H2 database In memory - Init schema via Spring/Hibernate question; it is not applicable here.)
5 Answers
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Warning on “diff.renamelimit variable” when doing git push
I'm pushing the local commit to the remote git server and got the following warning messages:
2 Answers
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How can I combine hashes in Perl?
...both hashes into %hash1? I always know that %hash2 and %hash1 always have unique keys. I would also prefer a single line of code if possible.
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