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Debugging and Profiling using Instruments - Tori #2

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Tori-Lew Oct 4, 2023
9c66c9b
Merge remote-tracking branch 'refs/remotes/origin/main'
Tori-Lew Oct 11, 2023
f55679c
Merge remote-tracking branch 'refs/remotes/origin/main'
Tori-Lew Oct 11, 2023
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Merge remote-tracking branch 'refs/remotes/origin/main'
Tori-Lew Oct 11, 2023
45ddc67
XCode Debugger - Fahrenheit to celsius
Tori-Lew Oct 11, 2023
a9be239
How many times the app will redraw it's views
Tori-Lew Oct 11, 2023
c4eeee4
Time Profiler to compare and contrast StressTest and the OccassionalU…
Tori-Lew Oct 11, 2023
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10 changes: 10 additions & 0 deletions DebuggingAndProfiling/ContentView.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,9 @@ import SwiftUI
struct ContentView: View {
var body: some View {
TabView {
// 2 - The app redrew its views 7 times in the 30 sec OccassionalUpdate was in the foreground and 2,730 times while stress test was in the foreground

// 3 - In the OccationalUpdate, starting took 19.82s in the 30sec it was in the foreground. In stressTest, it took 5.96 sec. So while the views were drawn more times during the stress test, those were updating faster so it didn't use as much CPU.
OccassionalUpdate()
.tabItem {
Image(systemName: "smiley")
Expand All @@ -25,6 +28,13 @@ struct ContentView: View {
Image(systemName: "ant")
Text("DebugThisCode")
}

// The algorithm for converting fahrenheit to celsius was incorrect, and the resulting variable declaration needed to be changed from var to let.

//ORIGINAL - var cel = (fah + 32) * 5 / 9
//CORRECT - let cel = (fah - 32) * 5 / 9
//ORIGINAL - var fah = (cel * 5 / 9 ) + 32
//CORRECT - let fah = (cel * 9 / 5) + 32
}
.padding()
}
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6 changes: 4 additions & 2 deletions DebuggingAndProfiling/DebugThisCode.swift
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Expand Up @@ -22,7 +22,8 @@ struct DebugThisCode: View {
print("Fah changed to \(fahrenheitTemp)")
if let fah = Double(fahrenheitTemp) {
print("Value is \(fah)")
var cel = (fah + 32) * 5 / 9
//var cel = (fah + 32) * 5 / 9
let cel = (fah - 32) * 5 / 9
celsiusTemp = String(cel)
} else {
print("Not a valid number")
Expand All @@ -42,7 +43,8 @@ struct DebugThisCode: View {
TextField("Temperature in Celsius", text: $celsiusTemp)
Button(action: {
if let cel = Double(celsiusTemp) {
var fah = (cel * 5 / 9 ) + 32
//var fah = (cel * 5 / 9 ) + 32
let fah = (cel * 9 / 5) + 32
fahrenheitTemp = String(fah)
} else {
print("Not a valid number")
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