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Array or List in Java. Which is faster?
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@Fortyrunner - From your experience, are there any such choices in Java between abstraction and raw data forms that do make a significant difference in performance ?
– euphoria83
Apr 4 '09 at 17:53
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Is it expensive to use try-catch blocks even if an exception is never thrown?
... stack and seeing if any try blocks exist that would catch this exception. From a layman's perspective, try may as well be free. It's actually throwing the exception that costs you - but unless you're throwing hundreds or thousands of exceptions, you still won't notice the cost.
try has some mino...
document.getElementById vs jQuery $()
...ject and is equivalent to $('#id').
You can get the underlying DOM object from a jQuery object by writing $('#id')[0].
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Refresh all files in buffer from disk in vim
The command to refresh a file from version on disk is :e!
5 Answers
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Get model's fields in Django
...e this will return a list of Field objects. To get the value of each field from the instance, use getattr(instance, field.name).
Update: Django contributors are working on an API to replace the _Meta object as part of a Google Summer of Code. See:
- https://groups.google.com/forum/#!topic/django-de...
Java / Android - How to print out a full stack trace?
...id (Java) how do I print out a full stack trace? If my application crashes from nullPointerException or something, it prints out a (almost) full stack trace like so:
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Is there a Python Library that contains a list of all the ascii characters?
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I think it is slightly confusing, ASCII is not from a to z but from 0 to 127 codes, that is not only letters.
– Andrey
May 5 '11 at 0:48
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Why are margin/padding percentages in CSS always calculated against width?
...poyzer I'd guess in the simplest case that browsers calculate block widths from the outside in (root to tips), then flow content into those blocks to determine their heights (tips to root).
– sam
Oct 10 '13 at 1:47
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Resuming git-svn clone
...m.
This will take a long time, as it will fetch every single revision from SVN and commit locally. If for any reason it stops, you can resume with git svn fetch.
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Best way to extract a subvector from a vector?
... Ok, I didn't realize it was that simple to obtain an iterator from an arbitrary vector element.
– An̲̳̳drew
Jan 7 '09 at 19:58
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