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Are duplicate keys allowed in the definition of binary search trees?
I'm trying to find the definition of a binary search tree and I keep finding different definitions everywhere.
12 Answers
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What are the differences between B trees and B+ trees?
In a b-tree you can store both keys and data in the internal and leaf nodes , but in a b+ tree you have to store the data in the leaf nodes only .
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What's this =! operator? [duplicate]
I was surprised by this code:
13 Answers
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What's better at freeing memory with PHP: unset() or $var = null
I realise the second one avoids the overhead of a function call ( update , is actually a language construct), but it would be interesting to know if one is better than the other. I have been using unset() for most of my coding, but I've recently looked through a few respectable classes found off t...
What is the difference between tree depth and height?
This is a simple question from algorithms theory.
The difference between them is that in one case you count number of nodes and in other number of edges on the shortest path between root and concrete node.
Which is which?
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How to deal with cyclic dependencies in Node.js
I've been working with nodejs lately and still getting to grips with the module system so apologies if this is an obvious question. I want code roughly like the following below:
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When do you use POST and when do you use GET?
From what I can gather, there are three categories:
27 Answers
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Check if a path represents a file or a folder
I need a valid method to check if a String represents a path for file or a directory. What are valid directory names in Android? As it comes out, folder names can contain '.' chars, so how does system understand whether there's a file or a folder?
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Difference between View and table in sql
What is the main difference between view and table in SQL. Is there any advantage of using views instead of tables.
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Paging in a Rest Collection
I'm interested in exposing a direct REST interface to collections of JSON documents (think CouchDB or Persevere ). The problem I'm running into is how to handle the GET operation on the collection root if the collection is large.
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