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I'm getting Key error in python
...t;
KeyError: 'c'
>>>
So, try to print the content of meta_entry and check whether path exists or not.
>>> mydict = {'a':'1','b':'2'}
>>> print mydict
{'a': '1', 'b': '2'}
Or, you can do:
>>> 'a' in mydict
True
>>> 'c' in mydict
False
...
Why is there huge performance hit in 2048x2048 versus 2047x2047 array multiplication?
...L is always power of 2.
The six comes from fact that 2^6 == 64 bytes is standard size of cache line.
Now what does this mean? Well it means that if I have address X and address Y and
(X >> 6) - (Y >> 6) is divisible by L (i.e. some large power of 2), they will be stored in the same ca...
Use curly braces to initialize a Set in Python
I'm learning python, and I have a novice question about initializing sets. Through testing, I've discovered that a set can be initialized like so:
...
Why main does not return 0 here?
...
That rule was added in the 1999 version of the C standard. In C90, the status returned is undefined.
You can enable it by passing -std=c99 to gcc.
As a side note, interestingly 9 is returned because it's the return of printf which just wrote 9 characters.
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sql primary key and index
...x does no good, but the only harm (very small) is the additional file size and row-creation overhead.
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How to create a multi-tenant database with shared table structures?
...quires the use of more
sophisticated design patterns.
As for technical and business considerations, the article makes a brief analysis on where a certain approach might be more appropriate than another:
The number, nature, and needs of the
tenants you expect to serve all affect
your data...
What encoding/code page is cmd.exe using?
...
Yes, it’s frustrating—sometimes type and other programs
print gibberish, and sometimes they do not.
First of all, Unicode characters will only display if the
current console font contains the characters. So use
a TrueType font like Lucida Console instead of the...
Difference between Visibility.Collapsed and Visibility.Hidden
What are differences between Visibility.Collapsed and Visibility.Hidden in WPF?
3 Answers
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How to compare two files not in repo using git
...
git's diff is more functional than the standard unix diff. I often want to do this and since this question ranks highly on google, I want this answer to show up.
This question: How to use git diff --color-words outside a Git repository?
Shows how to use git to di...
What's the difference between `raw_input()` and `input()` in Python 3?
What is the difference between raw_input() and input() in Python 3?
6 Answers
6
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