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Are Exceptions in C++ really slow
I was watching Systematic Error Handling in C++—Andrei Alexandrescu he claims that Exceptions in C++ are very very slow.
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Logical XOR operator in C++?
Is there such a thing? It is the first time I encountered a practical need for it, but I don't see one listed in Stroustrup . I intend to write:
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How to document a method with parameter(s)?
How to document methods with parameters using Python's documentation strings?
8 Answers
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Test a weekly cron job [closed]
I have a #!/bin/bash file in cron.week directory.
11 Answers
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Putting license in each code file? [closed]
I find it unnecessarily duplicated to have it in each code file, but I see it on most open source projects. Should I do that same, or just include a single license outside the code?
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What does “var FOO = FOO || {}” (assign a variable or an empty object to that variable) mean in Java
Looking at an online source code I came across this at the top of several source files.
7 Answers
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How to delete a row by reference in data.table?
My question is related to assignment by reference versus copying in data.table . I want to know if one can delete rows by reference, similar to
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Is there a Rake equivalent in Python?
Rake is a software build tool written in Ruby (like Ant or Make ), and so all its files are written in this language. Does something like this exist in Python?
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Showing the stack trace from a running Python application
I have this Python application that gets stuck from time to time and I can't find out where.
28 Answers
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how to exclude null values in array_agg like in string_agg using postgres?
If I use array_agg to collect names, I get my names separated by commas, but in case there is a null value, that null is also taken as a name in the aggregate. For example :
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