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Performing Breadth First Search recursively
Let's say you wanted to implement a breadth-first search of a binary tree recursively . How would you go about it?
21 Answ...
What is the difference between Numpy's array() and asarray() functions?
What is the difference between Numpy's array() and asarray() functions? When should you use one rather than the other? They seem to generate identical output for all the inputs I can think of.
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Can you animate a height change on a UITableViewCell when selected?
I'm using a UITableView in my iPhone app, and I have a list of people that belong to a group. I would like it so that when the user clicks on a particular person (thus selecting the cell), the cell grows in height to display several UI controls for editing the properties of that person.
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Foreign Key to non-primary key
I have a table which holds data, and one of those rows needs to exist in another table. So, I want a foreign key to maintain referential integrity.
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“loop:” in Java code. What is this, and why does it compile?
This code just made me stare at my screen for a few minutes:
12 Answers
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Why is using “for…in” for array iteration a bad idea?
I've been told not to use for...in with arrays in JavaScript. Why not?
27 Answers
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How do I ignore files in a directory in Git?
What is the proper syntax for the .gitignore file to ignore files in a directory?
10 Answers
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What is the difference between string primitives and String objects in JavaScript?
Taken from MDN
12 Answers
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What is the difference between atomic / volatile / synchronized?
How do atomic / volatile / synchronized work internally?
7 Answers
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Performance optimization strategies of last resort [closed]
There are plenty of performance questions on this site already, but it occurs to me that almost all are very problem-specific and fairly narrow. And almost all repeat the advice to avoid premature optimization.
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