Questions and Answers
The Earth orbits the Sun.
True
Go is a general purpose programming language designed by Google.
True
The process of writing software in Go involves only gathering requirements.
False
Files in modern operating systems can have different types of information such as multimedia files.
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Folders can only contain files and cannot include other folders.
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The extension of a file indicates its type.
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Ctrl + S is a shortcut to save the current file.
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Command + C is used to paste text currently in the clipboard.
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In Windows, file paths use the / (forward slash) character.
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The size of a file is measured in megabytes.
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Ctrl + F opens a find in file dialog in text editors.
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The Go programming language compiler is not necessary to write a Go program.
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Compiling the source code turns it into an executable format.
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Command + V is the shortcut to copy the currently selected text on OSX.
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The Text Wrangler text editor is available on Windows.
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Using Shift with the arrow keys allows for text selection without a mouse.
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Home and End keys are used to navigate to the beginning and end of a line.
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Computer programming is the art, craft, and science of writing programs which define how computers operate.
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The ISBN of the book is 978-1478355823.
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Cover art for the book was created by Abigail Doxsey Anderson.
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There are 20 chapters in the book.
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The first section of the book is about Concurrency.
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The terminal is mentioned as an important tool for programming in Go.
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Functions are covered before control structures in the book.
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The book includes a section on concurrency.
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The chapter on Testing comes before the chapter on Structs and Interfaces.
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The book was published in 2012.
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The command to change directories is called cd.
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You can go back to your home directory with the command cd..
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Text editors allow for formatting options such as bold and italic.
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The installer available at the book's website installs a text editor for Windows.
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Both OSX and Windows come with unformatted text editors.
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You can open a file in the text editor by going to Edit → Open.
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The result of the expression true && false is true.
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The line numbers in the Scite text editor are located to the right of the text area.
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The status bar in the text editor shows information about the file, including line and column numbers.
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The largest 2 digit number in binary is 11.
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The expression !(true && false) evaluates to true.
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The largest 8 digit binary number is 11111111.
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The expression true || false evaluates to false.
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The length of a string can be found using a built-in function in Go.
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In Go, the expression false && false outputs a true value.
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The expression (true && false) || (false && true) || !(false && false) evaluates to false.
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Study Notes
Earth's Orbit
- The Earth follows an elliptical orbit around the Sun, averaging about 93 million miles (150 million kilometers) in distance.
- It takes approximately 365.25 days for the Earth to complete one full orbit, defining the length of the year.
- The tilt of the Earth's axis at about 23.5 degrees relative to its orbital plane causes seasonal variations.
- The speed of Earth's orbit averages about 67,000 miles per hour (107,000 kilometers per hour).
- Gravitational attraction between the Earth and the Sun keeps the planet in a stable orbit, balancing centripetal force and gravitational pull.
- The Earth's orbit also influences daylight patterns, climate, and weather systems on the planet.
Programming in Go
- Go, designed by Google, is a general-purpose programming language known for its advanced features and clean syntax.
- It is ideal for beginners due to its wide platform availability, robust common library, and emphasis on good software engineering principles.
- The typical software development process includes gathering requirements, finding solutions, coding, compiling, running, and testing programs.
Files and Folders
- A file is a named collection of data, with a defined size and associated type, often indicated by a file extension (e.g., .txt for text files).
- Folders (directories) organize files and may contain other folders.
- On Windows, file paths use a backslash (e.g., C:\Users\john\example.txt) and the command line supports commands like
cdto change directories andlsto list contents.
Text Editors
- Programmers use text editors to write code in plain text, unlike word processors that apply formatting.
- Windows users can use Scite, while Mac users can use Text Wrangler, both of which support basic file operations and keyboard shortcuts for efficiency.
- Common keyboard shortcuts include saving files (Ctrl/Command + S), cutting (Ctrl/Command + X), copying (Ctrl/Command + C), and pasting (Ctrl/Command + V).
Go Tools and Compilation
- Go is a compiled language, requiring the Go compiler to translate source code into executable form.
- The installation of Go via the provided installer automatically sets up the necessary environment and tools for programming.
- An example Go program can demonstrate the use of logical operators, yielding outputs that illustrate their behavior (e.g.,
true && falseevaluates tofalse).
Types in Go
- Go supports several basic types, including booleans which form the basis for creating more complex types.
- Operators like
&&(AND),||(OR), and!(NOT) can be combined to form complex logical expressions, understood through truth tables.
Programming Exercises
- Problem-solving exercises encourage understanding of data types, basic operations, and string manipulation in Go.
- Sample problems include computing products and evaluating logical expressions to reinforce language syntax and type usage.
Conclusion
- Understanding Go's file structure, text editing, tools, and syntax is essential for effective programming.
- Mastery of key concepts in Go lays the groundwork for a deeper exploration of more advanced programming topics.
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Description
Test your knowledge on Earth's orbit around the Sun. This quiz covers aspects like orbital distance, the tilt of the Earth's axis, and the influence of gravitational forces. Discover how these factors impact seasons and climate!
