By Dave Thomas, David Heinemeier Hansson, Sam Ruby

ISBN-10: 1934356549

ISBN-13: 9781934356548

Ruby on Rails is helping you produce top of the range, beautiful-looking net purposes quick. you think about developing the applying, and Rails looks after the details.

Tens of hundreds of thousands of builders have used this award-winning ebook to benefit Rails. It's a vast, far-reaching instructional and reference that's instructed by means of the Rails middle workforce. If you're new to Rails, you'll get step by step advice. If you're an skilled developer, this ebook provides you with the great, insider details you need.

Rails has developed through the years, and this publication has developed in addition to it. We nonetheless commence with a step by step walkthrough of creating a true program, and in-depth chapters examine the integrated Rails gains. This variation now supplies new Ruby and Rails clients additional information at the Ruby language and takes extra time to provide an explanation for key strategies all through. most sensible practices on tips to observe Rails proceed to alter, and this version retains up. Examples use cookie sponsored classes, HTTP authentication, and energetic Record-based kinds, and the booklet focuses all through at the correct method to use Rails. also, this version now displays Ruby 1.9, a brand new unlock of Ruby with tremendous practical and function improvements.

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Extra info for Agile Web Development with Rails (4th edition)

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Specifically he proposed constrains on what constitutes an Iterated Local Search algorithm as 1) a single chain of candidate solutions, and 2) the method used to improve candidate solutions occurs within a reduced space by a black-box heuristic. 5. Iterated Local Search 47 [6], as well as [2] that introduces the principle, and [4] that summarized it (list taken from [8]). Learn More Two early technical reports by St¨ utzle that present applications of Iterated Local Search include a report on the Quadratic Assignment Problem [10], and another on the permutation flow shop problem [9].

Engelbrecht’s “Computational Intelligence: An Introduction” provides a modern and detailed introduction to the field covering classic subjects such as Evolutionary Computation and Artificial Neural Networks, as well as more recent techniques such as Swarm Intelligence and Artificial Immune Systems [20]. Pedrycz’s slightly more dated “Computational Intelligence: An Introduction” also provides a solid coverage of the core of the field with some deeper insights into fuzzy logic and fuzzy systems [41].

The optimal tour distance for Berlin52 instance is 7542 units. The Iterated Local Search runs for a fixed number of iterations. The implementation is based on a common algorithm configuration for the TSP, where a ‘double-bridge move’ (4-opt) is used as the perturbation technique, and a stochastic 2-opt is used as the embedded Local Search heuristic. The double-bridge move involves partitioning a permutation into 4 pieces (a,b,c,d) and putting it back together in a specific and jumbled ordering (a,d,c,b).

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Agile Web Development with Rails (4th edition) by Dave Thomas, David Heinemeier Hansson, Sam Ruby


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