... 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 ... 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 ... 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 accessible through the browser. Another alternative...
... 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...
... testing is considered one of Ruby s niches (largely due to Watir,http://wtr.rubyforge.org/, a tool fordriving web browsers). If you’re a programmer, you may already knowthat Ruby has recently become ... useyour computer’s command-line interpreter. The command-line2inter- command-line interpreterpreter is a program that lets you command the compiler by typing intext, rather than by pointing and ... differences.rbdifferences.rb:1:in ‘initialize': cannot convert nil into String (TypeError)from differences.rb:1:in ‘open'from differences.rb:1Not a friendly error message. I encourage...
... black and white drawing. Some like to use heavier lines in darker areas and thinnerlines closer to light. Others may use a more uniform line but then render theirtexture 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 anew layerfor inks inthe NewLayer dialogbox.188Part III: Refining ... a group of markers of various sizes and shapes. (Examples of linesdrawn with each type of marker are shown in Figure 10-5.)The options in the Marker tool’s menu areߜ Round Marker: The first...
... 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...
... 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...
... NEIGHBORHOODPERIOD 14. PRESENT PERFECT WITH SINCE AND FORA. 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/agesHe 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...
... (+ O) (+ prep) + V-ingEXERCISE1. “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 Trân26. ... you be back early?” he asked her.………………………………………………………………………………………… Prepared by Nguyễn Thị Ngọc TrânREPORTED SPEECHChange the following sentences into reported speech:1. “Come and see me if...
... 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...
... reported speech with infinitive and gerundExercise 1. Rewrite each of the following sentences in reported speech.Using advise, beg, introduce, invite, offer, order, promise, remind, ... borrowed your car for some hours” the man said. (admitted) 16. “ I’m sorry I damaged your tape recorder, Mike.” Said Bob. Bob apologized 17. “ You damaged my camera’ said Jane to Henry. ... appropriate. 1. The girl said to Jim, “ Would you give your book to Mary?” ( ask, tell order) The girl 2. The little said to her father, “ Daddy, I really like tricycle. Can we buy it?” (require,...