Section 1
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Immutable:
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Last updated
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Date created
Mar 1, 2020
Cards (61)
Section 1
(50 cards)
Immutable:
cannot be updated or changed
Debugging:
process for identifying and fixing an error
Comments
these little notes help people understand the code when they read it later. They are ignored by the playground or app, so they don't affect how your code is run.
Constant
An identifier that is immutable
Declaration
Introduces a new name or construct into your program
API:
Any code that performs a specific set of tasks has to provide a way for developers to use it.
Identifier
Refers to a value, function, type or any other abstraction. Also, formal word for a name in code
Side effect
any work done by a function that doesn't help create a return value
Escape character:
You can use this \ in a string to tell Swift that is should treat what comes next as special
Unicode:
defines a way to represent almost any character from any language in a consistent way
Method:
a function defined inside a type
Playground
An environment in Xcode where you can play and experiment with code-and see instant results-without anything getting in your way.
Default:
is selected when no other option is available
Results Sidebar
shows information about each line of code that produces an output value
Type annotation
You use this when Swift needs more information about the type of an instance or argument
Property:
a piece of data held by a struc, class, or enum
Variable:
an identifier that is mutable
Algorithm
a series of steps that perform a task
Remainder operator %:
returns the amount left over after dividing one number by another.
Integer
a whole number with no fractions or decimals. can be a positive number, a negative number, or zero
Constant:
is an identifier that is immutable
Case:
capitalization style of a word or phrase
Error
General term for a problem with code
Mutable:
can be updated or changed
Print:
tells a swift program to log a message to the console.
Assignment
To give a name or value when you first declare a name or when you update a variable's value
Comment out
Adding two slashes (//) to the beginning of its line. This line of code will be left out of the running program.
Type
a named grouping of properties and methods of a kind of data.
Instance:
a value of a particular type
Index:
the numbered position of an item in an ordered collection
Quick Look Button:
if you move your cursor over a result in a playgrounds result side bar, you'll see an icon that looks like a small eye. It will display the results in the results sidebar especially for instances of images, collars, and views,
Initializer:
sets up an instance so it's ready to be used
Conditional statement:
a traffic controller that causes different code to run in different situations
Boolean:
a type that only has two possible values:true and false
Parameter
to work with an input value or values
String:
in most programming languages, text values are called this
Function:
combine detailed steps into a single block of code that can be used again and again
Keyword
Terms that have special meaning in the Swift programming language and can't be used for any other purposes
Console:
a message center to show details about the way a program is running.
Argument label
introduces the argument passed into the function
Argument
used to give an input value, or values, to a function
Array:
you use this to hold a list of items of the same type keeping them in order
Framework
a group of types and capabilities
String interpolation:
when you'd like to put the value of a constant or variable in the middle of a string literal.
Type inference
to work out somethings type from the available information, even when the name of the type isn't explicitly put into words
Log:
a record of information about a program as it runs so the programmer can check the outcome of a step even after the program has progressed several billion steps past the one in question
Escape sequence:
combines an escape character with another character or characters to achieve a new effect
Return
when it gives an output value back to its caller
Comparison operators:
a symbol in a comparison statement when you describe a relationship between two things
Character:
a single letter, number, punctuation mark, symbol, or blank space.
Section 2
(11 cards)