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How to sort an array of objects by multiple fields?
From this original question , how would I apply a sort on multiple fields?
30 Answers
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Compelling examples of custom C++ allocators?
What are some really good reasons to ditch std::allocator in favor of a custom solution? Have you run across any situations where it was absolutely necessary for correctness, performance, scalability, etc? Any really clever examples?
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Using LIMIT within GROUP BY to get N results per group?
The following query:
13 Answers
13
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How do I time a method's execution in Java?
Most of the searches on Google return results for timers that schedule threads and tasks, which is not what I want.
40 Answ...
What is the difference between ${var}, “$var”, and “${var}” in the Bash shell?
What the title says: what does it mean to encapsulate a variable in {} , "" , or "{} "? I haven't been able to find any explanations online about this - I haven't been able to refer to them except for using the symbols, which doesn't yield anything.
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List of ANSI color escape sequences
On most terminals it is possible to colorize output using the \033 ANSI escape sequence.
5 Answers
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design a stack such that getMinimum( ) should be O(1)
This is one of an interview question. You need to design a stack which holds an integer value such that getMinimum() function should return the minimum element in the stack.
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Build tree array from flat array in javascript
I have a complex json file that I have to handle with javascript to make it hierarchical, in order to later build a tree.
Every entry of the json has :
id : a unique id,
parentId : the id of the parent node (which is 0 if the node is a root of the tree)
level : the level of depth in the tree
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How to say “should_receive” more times in RSpec
I have this in my test
4 Answers
4
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Swift - Split string over multiple lines
How could I split a string over multiple lines such as below?
15 Answers
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