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What is the lifetime of a static variable in a C++ function?
If a variable is declared as static in a function's scope it is only initialized once and retains its value between function calls. What exactly is its lifetime? When do its constructor and destructor get called?
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What are the differences between git remote prune, git prune, git fetch --prune, etc
My situation is this... someone working on the same repo has deleted a branch from his local & remote repo...
4 Answers
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How does one write code that best utilizes the CPU cache to improve performance?
This could sound like a subjective question, but what I am looking for are specific instances, which you could have encountered related to this.
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Python __str__ versus __unicode__
Is there a python convention for when you should implement __str__() versus __unicode__() . I've seen classes override __unicode__() more frequently than __str__() but it doesn't appear to be consistent. Are there specific rules when it is better to implement one versus the other? Is it ne...
Why is it bad style to `rescue Exception => e` in Ruby?
Ryan Davis’s Ruby QuickRef says (without explanation):
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How to get string objects instead of Unicode from JSON?
I'm using Python 2 to parse JSON from ASCII encoded text files.
21 Answers
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Uses for Optional
Having been using Java 8 now for 6+ months or so, I'm pretty happy with the new API changes. One area I'm still not confident in is when to use Optional . I seem to swing between wanting to use it everywhere something may be null , and nowhere at all.
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Why does casting int to invalid enum value NOT throw exception?
If I have an enum like so:
4 Answers
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Browsers' default CSS for HTML elements
Where can I find a browser's default CSS for HTML elements?
4 Answers
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How to avoid null checking in Java?
I use object != null a lot to avoid NullPointerException .
62 Answers
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