Exam 3: Working With Strings, Objects, and Variables

Which of the following constructions is used as the basis for defining objects?

A method is an object attribute stored as a variable that describes a particular aspect or feature of the object.

A case code block is ____.

The String class's swapcase method converts a string to all uppercase letters.

One of the differences between Ruby and many other programming languages is that ____.

Ruby variable names are:

Which of the following statements correctly defines local variable scope?

Interpolation is the process of substituting the value of an expression or variable inside a string.

A constant is very similar to variable, expect that:

Which of the following methods should be used to convert a numeric value to an integer?

Ruby supports a number of different types of numeric classes, including all of the following except ____.

Creating a string by embedding characters inside the %q{ and } characters is equivalent to embedding them within double quotes.

Which of the following is not true about Ruby?

To compare two strings to see if they are equal the = operator must be used.

When creating multiline text strings using the %q{ and } and %Q{ and } characters, you can substitute any characters you wish in place of the { and } characters.

Which of the following variable names is valid?

Objet properties are implemented as named variables.

Text plays a big role in many scripts when communicating with users. Text strings in Ruby can consist of letters, numbers, special characters and even blank spaces.

When the user presses Enter in order to submit input, Ruby automatically appends an end of line marker to the end of the input. This end of line marker can be removed using what method?

Concatenation is the process of splitting a string into two smaller strings.