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Real world use cases of bitwise operators [closed]
What are some real world use cases of the following bitwise operators?
41 Answers
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How to calculate the number of occurrence of a given character in each row of a column of strings?
I have a data.frame in which certain variables contain a text string. I wish to count the number of occurrences of a given character in each individual string.
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Check if a given key already exists in a dictionary
I wanted to test if a key exists in a dictionary before updating the value for the key.
I wrote the following code:
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Which is more preferable to use: lambda functions or nested functions ('def')?
I mostly use lambda functions but sometimes use nested functions that seem to provide the same behavior.
16 Answers
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Is the Scala 2.8 collections library a case of “the longest suicide note in history”? [closed]
I have just started to look at the Scala collections library re-implementation which is coming in the imminent 2.8 release. Those familiar with the library from 2.7 will notice that the library, from a usage perspective, has changed little. For example...
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C++11 introduced a standardized memory model. What does it mean? And how is it going to affect C++ p
C++11 introduced a standardized memory model, but what exactly does that mean? And how is it going to affect C++ programming?
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Iterate over object attributes in python
I have a python object with several attributes and methods. I want to iterate over object attributes.
8 Answers
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pandas: filter rows of DataFrame with operator chaining
Most operations in pandas can be accomplished with operator chaining ( groupby , aggregate , apply , etc), but the only way I've found to filter rows is via normal bracket indexing
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java.sql.SQLException: - ORA-01000: maximum open cursors exceeded
I am getting an ORA-01000 SQL exception. So I have some queries related to it.
13 Answers
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How does “cat
I needed to write a script to enter multi-line input to a program ( psql ).
9 Answers
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