oreilly exploring everyday things with r and ruby

... use the standard libraries and any other libraries other than the Ruby core, you will need to require them in your program: require 'base64' In addition to the standard libraries, you ... code. For example, writing a program that uses several chunks of code from this book does not require Preface | xi Sau Sheong Chang Exploring Everyday Things with R and Ruby Preface Explorers Ahoy! It’s ... of other unofficial R user interfaces, such as R Commander and RStudio. RStudio has a very nice R environment that runs on the server but is acces sible through the browser. Another alternative...

Ngày tải lên: 15/02/2014, 07:20

... book (and also in Ruby programming), are arrays and hashes. Arrays are indexed containers that hold a sequence of objects. You can create arrays using square brackets ( []) or using the Array ... professionals use Safari Books Online as their primary resource for research, problem solving, learning, and certification training. Safari Books Online offers a range of product mixes and pricing ... strength for building desktop graphical user interfaces. Among the other more popular Ruby UI toolkits (in case you want to get serious later on) are FXRuby, WxRuby, qtRuby, and Tk. If you’re...

Ngày tải lên: 08/03/2014, 18:20

... number type does help you avoid many numeric type errors. However, integers are fast, CPU-friendly, and the preferred choice for many programming tasks in other languages. JavaScript’s number representation ... numbers into an appropriate integer type for JavaScript’s rarely used bitwise operators. Though sometimes incorrectly dismissed as slow and irrelevant to web pro- gramming, some of these operators ... http://en.wikipedia.org/wiki/The_Tortoise _and_ the_Hare 25 used for the computers of the day required a good understanding of binary and hexa- decimal notation. Binary numbers are rarely used in web programming,...

Ngày tải lên: 21/03/2014, 11:58

... better Prepare a Separate Android Stylesheet I’m as DRY as the next guy, but in the real world you’re better off making a clean break between your desktop browser stylesheet and your Android ... starting color, and the ending color. You cannot reverse the horizontal and vertical portions of the four gra- dient start and stop point constants (i.e., left top, left bottom, right top, or right ... requests to a web server without reloading the current page (e.g., to retrieve some HTML, submit a form). This approach makes for a very smooth user experience, but does require that you reinvent a lot...

Ngày tải lên: 31/03/2014, 16:37

... Squid, offer entry-level hosting with PHP for under $10 a month. • Host them on a web server running on your computer and connect to the web server running on your computer from your Android phone. ... the border-image property, I found it odd that I had to specify the border widths when I had already done so with the border-width property. After some painful trial and error, I discovered that ... you’ll get to run the Android ver- sion of your site whether you load it from a phone or the desktop browser. Regrettably, Internet Explorer will not understand these expressions, so we have to...

Ngày tải lên: 31/03/2014, 16:37

... capitals. The Pragmatic Starter Kit, The Pragmatic Programmer, Pragmatic Programming, Prag matic Bookshelf and the linking g device are trademarks of The Pragmatic Programmers, LLC. Every precaution ... at http://www.pragmaticprogrammer.com Copyright © 2006 Brian Marick. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmit- ted, in any form, or by ... contained herein. Our Pragmatic courses, workshops, and other products can help you and your team create better software and have more fun. For more information, as well as the latest Pragmatic...

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... black and white drawing. Some like to use heavier lines in darker areas and thinner lines closer to light. Others may use a more uniform line but then render their texture with extensive and sometimes ... Layers list (just before the Layers header). You now have a fresh ink layer to work over your rough draft. Figure 10-1: Create a new layer for inks in the New Layer dialog box. 188 Part III: Refining ... a group of markers of various sizes and shapes. (Examples of lines drawn with each type of marker are shown in Figure 10-5.) The options in the Marker tool’s menu are ߜ Round Marker: The first...

Ngày tải lên: 27/08/2012, 14:31

... inhalation and intravenous antibiotics). Microbial counts of P. aeruginosa, lung function measurements, and inflammatory markers were determined before and after treatment. Results: The sugar inhalation ... 595-599. 16. Sofer D, Gilboa-Garber N, Belz A, Garber NC: “Subinhibitory” erythromycin represses production of Pseudomonas aeruginosa lectins, autoinducer and virulence factors. Chemotherapy 1999; ... authors declare no conflict of interest. This study was registered at the University of Hamburg, Germany. References 1. Davis PB, Drumm M, Konstan MW: Cystic fibrosis. Am J Respir Crit Care...

Ngày tải lên: 03/11/2012, 11:48

... parrot from Australia. rhea The rhea is a large, flightless bird from South America. roadrunner The roadrunner is a bird is a fast running bird that rarely flies. robin ... radish A radish is a sharp- tasting vegetable that grows underground. raisin Raisins are dried grapes. raspberry Raspberries are a type of edible berry that grows on a prickly ... radio A radio lets you hear broadcast music and talk shows. refrigerator A refrigerator is a machine that keeps food cold. remote control A remote control lets you operate...

Ngày tải lên: 16/04/2013, 23:27

... NEIGHBORHOOD PERIOD 14. PRESENT PERFECT WITH SINCE AND FOR A. Revision: The Present Perfect Tense 1. Form - Affirmative: S + has/have +V3/ed…. - Negative: S + has/have + not + V3/ed… - Interrogative: ... FOR: - For + a period of time (FOR + khoảng thời gian:) For two hours/a week/20 minutes/50 years/five days/a long time/six months/ages He has worked here for a year. (He began working here ... week. 3 Jorge (read)____________ the newspaper for an hour. 4 ______ Maria (l earn)_____________ English since grade 6? 5 He (swim)_____________ for half an hour. 6 How long ____________ Mr. Johnson...

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Ngày tải lên: 22/08/2013, 14:52

... (+ O) (+ prep) + V-ing EXERCISE 1. “Please type this letter for me” The director said to his secretary. …………………………………………………………………………. 2. “Lie down on the floor” The robbers said to everybody at ... Said the Trade Union Officer. ……………………………………………………………………………. 8. “Don’t touch that wire with your wet hand.” said the teacher. …………………………………………………………………………… Prepared by Nguyễn Thị Ngọc Trân 26. ... you be back early?” he asked her. ………………………………………………………………………………………… Prepared by Nguyễn Thị Ngọc Trân REPORTED SPEECH Change the following sentences into reported speech: 1. “Come and see me if...

Ngày tải lên: 05/09/2013, 04:10

Ngày tải lên: 05/09/2013, 16:10

... for groups of four. One student is the referee and has a piece of paper with the sentence in the correct order, with one extra space included, representing the 'mine'. The other players ... players play with a piece of paper with numbered blanks and the words mixed up. They take it in turns to nominate words for each blank. Each word correctly placed scores a point for that player ... students in groups of three, give each student a number, 1, 2, or 3 and ask them to say one word from their box in turn. Explain that the boxes are in order but the words are not. Encourage them...

Ngày tải lên: 06/09/2013, 10:10