iOS10 Swift Playgrounds 1-7

Question 1

algorithm

Answer 1

A step-by-step instructions or rules for solving a problem. E.g., a list of steps used to make a cup of tea can be considered an algorithm.

Question 2

operator (list all types)

Answer 2

A symbol that represents an action on one or more values. Four main types:

Arithmetic (+, -, *, /) does basic math.
Assignment (=) assigns a value to an object.
Comparison (==, !=,, , =) compares and returns Boolean value of true or false.
Logical (&&, !, ||) combines or inverts Boolean value and returns true or false.

Question 3

Boolean

Answer 3

A type that has a value of either true or false. For example, 9

Question 4

bug / debug

Answer 4

An error in code that prevents a program from running as expected. To find and fix errors in code that prevent a program from running correctly.

Question 5

call

Answer 5

to run (a function or a method). E.g., “I called the move() function.”

Question 6

command

Answer 6

Code that tells the program to perform a specific action.

Question 7

compose / decompose

Answer 7

To combine small parts of a program to solve a larger program. OR to break a large problem into smaller, more manageable pieces.

Question 8

conditional code

Answer 8

Code that start with an “if” or has loops. Runs based on conditions.

Question 9

define

Answer 9

to provide the explicit value or behavior of a newly created piece of code, such as a function, variable, or custom type.

Question 10

nest

Answer 10

The act of placing one block of code (loops or conditional if statements) inside another to create inner blocks within outer blocks.

Question 11

function

Answer 11

A named set of commands that can be run whenever needed.

Question 12

if statement (list all parts)

Answer 12

A code structure that uses any combination of if blocks, else if blocks, and else blocks.

Question 13

inner / outer

Answer 13

When one loop or block of code is nested inside another loop or block of code. E.g., an inner loop is nested inside an outer loop. An inner conditional block is inside an outer conditional block.

Question 14

loop (describe first 2 types)

Answer 14

A block of code that’s repeated a certain number of times (e.g., a for loop) or until a condition is met (e.g., a while loop).

A for loop is a block of repeated code that runs a certain number of times.

A while loop is a block of code that runs for as long as a given condition is true. When the condition changes to false, the loop stops running.

Question 15

pattern

Answer 15

A repeating set of circumstances or data.

Question 16

pseudocode

Answer 16

A human-readable description of an algorithm, usually written using a mix of everyday language and code.

Question 17

reusability

Answer 17

A characteristic of code that allows it to be used in different situations within a program.

Question 18

statement

Answer 18

A structure, such as a loop or if statement, that organizes code in a program.

Question 19

wireframe

Answer 19

An outline of an item, such as a gem or block for a puzzle world, webpage for a website, or a screen for a mobile app.