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Deep copy of a dict in python
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Is there any difference in Python 3.2 and 2.7 codes? They seem identical to me. If so, would be better a single block of code and a statement "Works for both Python 3 and 2"
– MestreLion
Jun 7 '14 at 3:59
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Remove folder and its contents from git/GitHub's history
I was working on a repository on my GitHub account and this is a problem I stumbled upon.
8 Answers
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Why would anyone use set instead of unordered_set?
C++0x is introducing unordered_set which is available in boost and many other places. What I understand is that unordered_set is hash table with O(1) lookup complexity. On the other hand, set is nothing but a tree with log(n) lookup complexity. Why on earth would anyone use set instead ...
What is the best way to use a HashMap in C++?
I know that STL has a HashMap API, but I cannot find any good and thorough documentation with good examples regarding this.
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How to make modal dialog in WPF?
I am writing my first application in WPF and want to have the user input some data on a modal dialog window. Apparently, this is not simple to do in WPF, because the parent window stays fully enabled, and the method that created the new child window doesn't stop and wait for the child window to cal...
E11000 duplicate key error index in mongodb mongoose
...nt with the sparse index to filter these null values from the unique index and avoid the error.
unique indexes
Sparse indexes only contain entries for documents that have the indexed field, even if the index field contains a null value.
In other words, a sparse index is ok with multiple documents...
How do I switch between the header and implementation file in Xcode 4?
How do I switch between the header and implementation file in Xcode 4?
7 Answers
7
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How can I get the current screen orientation?
I just want to set some flags when my orientation is in landscape so that when the activity is recreated in onCreate() i can toggle between what to load in portrait vs. landscape. I already have a layout-land xml that is handling my layout.
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What's the difference between Jetty and Netty?
What is the main difference between Jetty and Netty?
3 Answers
3
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Skip rows during csv import pandas
I'm trying to import a .csv file using pandas.read_csv() , however I don't want to import the 2nd row of the data file (the row with index = 1 for 0-indexing).
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