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Download Big Data Analytics: Disruptive Technologies for Changing the by Arvind Sathi PDF

By Arvind Sathi

Bringing a practitioner's view to special information analytics, this paintings examines the drivers at the back of immense facts, postulates a collection of use circumstances, identifies units of resolution elements, and recommends a number of implementation methods. This paintings additionally addresses and punctiliously solutions key questions about this rising subject, together with what's titanic info and the way is it getting used? How can strategic plans for large facts analytics be generated? and the way does tremendous info swap analytics structure? the writer, who has greater than twenty years of expertise in details administration structure and supply, has drawn the fabric from a wide breadth of workshops and interviews with company and data know-how leaders, offering readers with the most recent in evolutionary, innovative, and hybrid methodologies of relocating ahead to the courageous new global of huge information.

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F” and then a nonword period. 18 | Chapter 1: Strings Let’s rewrite our word_count method to use that regular expression. We can’t use the original implementation, because its code block takes only one argument. String#scan passes its code block one argument for each match group in the regular expression, and our improved regular expression has two match groups. The first match group is the one that actually contains the word. I. i"=>1, "the"=>1, "fella"=>1, "that"=>1, # "man-about-town"=>1, "he's"=>1} Note that the “\w” character set matches different things depending on the value of $KCODE.

Here, the variable string points to an object of class String. That class defines over a hundred built-in methods: named pieces of code that examine and manipulate the string. We’ll explore some of these throughout the chapter, and indeed the entire book. Let’s try out one now: String#length, which returns the number of bytes in a string. length( ) # => 15 In Ruby, parentheses are almost always optional. They’re especially optional in thiscase, since we’re not passing any arguments into String#length.

You can take advantage of this feature when you need to display special characters to the end-user, or create a string containing a lot of backslashes. 5 Representing Unprintable Characters | 13 special. If you need to create a string with special characters and a lot of embedded double quotes, use the %{} construct. 6 Converting Between Characters and Values Problem You want to see the ASCII code for a character, or transform an ASCII code into a string. Solution To see the ASCII code for a specific character as an integer, use the ?

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