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How to get line count of a large file cheaply in Python?
... better way of doing that without reading the entire file? Not sure... The best solution will always be I/O-bound, best you can do is make sure you don't use unnecessary memory, but it looks like you have that covered.
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Hidden features of Python [closed]
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enumerate
Wrap an iterable with enumerate and it will yield the item along with its index.
For example:
>>> a = ['a', 'b', 'c', 'd', 'e']
>>> for index, item in enumerate(a): print index, item
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0 a
1 b
2 c
3 d
4 e
>>>
References:
Python tutorial—loop...
Is python's sorted() function guaranteed to be stable?
...tes, you can do it in one pass:
sorted_list= sorted(
your_sequence_of_items,
key= lambda item: (item.last_name, item.first_name))
taking advantage of tuple comparison.
This answer, as-is, covers the original question. For further sorting-related questions, there is the Python Sorting How...
Visual Studio: ContextSwitchDeadlock
...h "ContextSwitchDeadlock".
Then, uncheck it.
Or shortcut
Ctrl+D,E
Best.
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Android: Specify two different images for togglebutton using XML
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Your code is fine. However, the toggle button will display the first item in your selector that it matches, so the default should come last. Arrange the items in the following manner to ensure they will all be utilized:
<selector xmlns:android="http://schemas.android.com/apk/res/android"&g...
Storing Images in DB - Yea or Nay?
...y TB of images. We've found that storing file paths in the database to be best.
There are a couple of issues:
database storage is usually more expensive than file system storage
you can super-accelerate file system access with standard off the shelf products
for example, many web servers use t...
How does collections.defaultdict work?
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Usually, a Python dictionary throws a KeyError if you try to get an item with a key that is not currently in the dictionary. The defaultdict in contrast will simply create any items that you try to access (provided of course they do not exist yet). To create such a "default" item, it calls ...
JSON.Net Self referencing loop detected
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This is the best way to approach it if you're also using async methods. It can be a real pain, but it solves a lot of issues you would have otherwise (including this one) and also can be much more performant as you're only querying what ...
Convert Pixels to Points
...F. At the end of the day, who the heck knows what the DPI is? I'm using my best guess. :)
– Todd Davis
Sep 26 '08 at 14:38
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Access POST values in Symfony2 request object
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This is great, and now is the best answer. $form->getData() didn't exist or wasn't documented when I asked the question.
– Acyra
Nov 6 '12 at 21:27
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