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data-structures

Get “Value” property in IGrouping

by IT Nursery

I have a data structure like public DespatchGroup(DateTime despatchDate, List<Products> products); And I am trying to do… var list = new List<DespatchGroup>(); foreach … Read more

Tags c, data-structures, igrouping, linq

What’s the difference between the data structure Tree and Graph?

by IT Nursery

Academically speaking, what’s the essential difference between the data structure Tree and Graph? And how about the tree based search and Graph based … Read more

Tags data-structures, map, search, tree

How to implement a Map with multiple keys? [duplicate]

by IT Nursery

This question already has answers here: Multiple indexes for a Java Collection – most basic solution? (15 answers) Closed 5 years ago. I … Read more

Tags data-structures, java

lenses, fclabels, data-accessor – which library for structure access and mutation is better

by IT Nursery

There are at least three popular libraries for accessing and manipulating fields of records. The ones I know of are: data-accessor, fclabels and … Read more

Tags data-structures, haskell, lenses, record

Why would anyone use set instead of unordered_set?

by IT Nursery

C++0x is introducing unordered_set which is available in boost and many other places. What I understand is that unordered_set is hash table with … Read more

Tags algorithm, c, c++11, data-structures

Test whether a list contains a specific value in Clojure

by IT Nursery

What is the best way to test whether a list contains a given value in Clojure? In particular, the behaviour of contains? is … Read more

Tags clojure, data-structures

Are duplicate keys allowed in the definition of binary search trees?

by IT Nursery

I’m trying to find the definition of a binary search tree and I keep finding different definitions everywhere. Some say that for any … Read more

Tags binary-tree, computer-science, data-structures

What would a “frozen dict” be?

by IT Nursery

A frozen set is a frozenset. A frozen list could be a tuple. What would a frozen dict be? An immutable, hashable dict. … Read more

Tags data-structures, dictionary, immutability, python

How do I clear the std::queue efficiently?

by IT Nursery

I am using std::queue for implementing JobQueue class. ( Basically this class process each job in FIFO manner). In one scenario, I want … Read more

Tags c, data-structures, queue, stl

How does the HyperLogLog algorithm work?

by IT Nursery

I’ve been learning about different algorithms in my spare time recently, and one that I came across which appears to be very interesting … Read more

Tags algorithm, data-structures, database, hyperloglog, math
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