Thinking Defensively about Functions, Methods, and Input

Overview/Description
Target Audience
Prerequisites
Expected Duration
Lesson Objectives
Course Number
Expertise Level

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Overview/Description
Defensive Programming in iOS has to do with using coding practices and techniques to create apps, that are reliable and resilient. In this course, you will learn about thinking defensively when creating functions and methods, and also when working with inputs to your programs.

Target Audience
iOS developers who have experience creating apps using the Objective-C and Swift languages, and who are interested in learning to employ defensive programming techniques for iOS apps

Prerequisites
None

Expected Duration (hours)
1.9

Lesson Objectives

Thinking Defensively about Functions, Methods, and Input

start the course

create code that handles file inputs to an iOS app

create code that handles url scheme inputs to an iOS app

validate user-provided input using Objective-C

use a real-time approach to validating user-provided input in Objective-C

use secure coding principles to guard against format string attacks

restrict free navigation around the Web based on user input in a UIWebView

use best practices to name functions and methods in Objective-C

use best practices to name accessor methods in Objective-C

use best practices to name delegate methods in Objective-C

reduce method complexity in iOS apps using Objective-C

overload a function to reduce code complexity in Swift

design functions that have a single and defined focus

identify and use different class naming standards in Objective-C

create and use constants in Objective-C

create and use constants in Swift

create and use resource files in an iOS app

easily store and retrieve data from the defaults database

recognize how using brackets can protect against potential bugs

design while loops that are not vulnerable to running forever

design for loops that are not vulnerable to running forever

identify and avoid bugs caused by altered loop variables

handle various types of inputs to an iOS app

Course Number:
sd_dpio_a01_it_enus

Expertise Level
Intermediate