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UDP vs TCP, how much faster is it? [closed]
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UDP is faster than TCP, and the simple reason is because its non-existent acknowledge packet (ACK) that permits a continuous packet stream, instead of TCP that acknowledges a set of packets, calculated by using the TCP window size and round-trip time (RTT).
For more inform...
How to understand Locality Sensitive Hashing?
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The best tutorial I have seen for LSH is in the book: Mining of Massive Datasets.
Check Chapter 3 - Finding Similar Items
http://infolab.stanford.edu/~ullman/mmds/ch3a.pdf
Also I recommend the below slide:
http://www.cs.jhu.edu/...
Does Python optimize tail recursion?
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No, and it never will since Guido van Rossum prefers to be able to have proper tracebacks:
Tail Recursion Elimination (2009-04-22)
Final Words on Tail Calls (2009-04-27)
You can manually eliminate the recursion with a transformation like this:
>>> def trisum(n, csum):...
How to fix height of TR?
Is it possible to fix the height of a row (tr) on a table?
7 Answers
7
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Easy interview question got harder: given numbers 1..100, find the missing number(s) given exactly k
I had an interesting job interview experience a while back. The question started really easy:
47 Answers
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How the single threaded non blocking IO model works in Node.js
I'm not a Node programmer, but I'm interested in how the single threaded non blocking IO model works.
After I read the article understanding-the-node-js-event-loop , I'm really confused about it.
It gave an example for the model:
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The JPA hashCode() / equals() dilemma
There have been some discussions here about JPA entities and which hashCode() / equals() implementation should be used for JPA entity classes. Most (if not all) of them depend on Hibernate, but I'd like to discuss them JPA-implementation-neutrally (I am using EclipseLink, by the way).
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catch exception that is thrown in different thread
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In .NET 4 and above, you can use Task<T> class instead of creating new thread. Then you can get exceptions using .Exceptions property on your task object.
There are 2 ways to do it:
In a separate method: // You process exception in ...
What does the “yield” keyword do?
...o understand what yield does, you must understand what generators are. And before you can understand generators, you must understand iterables.
Iterables
When you create a list, you can read its items one by one. Reading its items one by one is called iteration:
>>> mylist = [1, 2, 3]
&g...
ES6 class variable alternatives
...using the following pattern in frameworks to create classes and class variables, which is comfy:
15 Answers
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