Xcode takes long time to print debug results.

Question

When I debug on Xcode it takes around 30 seconds or more to print results of po on Xcode console.

Unfortunately, this is only few information I have on the issue.

However, there is another point to consider. This issue is very specific to a project. This is because when I use po for other projects on same Macbook, it works immediately. Also, this particular project is slow on all other Macbook, and for all team.

I googled it but no relevant answer found. I find it easy to use print(...) rather than using debugging on Xcode console. However, it's more work and requires lots of rebuilds.

instead of using `po`, try `e` or `p`. See if that helps... – mfaani Feb 20 '18 at 12:10 — mfaani, Feb 20 '18 at 12:10
Yes, I tried all. All are equally slow. – BLC Feb 20 '18 at 12:27 — BLC, Feb 20 '18 at 12:27

score 0 · Answer 1 · answered Feb 21 '18 at 23:56

I have several explanations:

There is a lot of code (Xcode slows down after a certain amount of code) Also make sure your print statement is towards the top of your page. Xocde goes from top to bottom.
Your Mac is slow. Some Macs after a certain amount of usage slow down. Also if you have a Mac mini or air they are slower than others.
Xcode Beta. If you are using Xcode beta then there might just be a bug.

If none of those answer you provide me with more info and I provide other solutions.

score 0 · Answer 2 · answered Dec 21 '18 at 12:17

Swift:

Try this solution which helps to reduce log time in debug mode.

Step 1: Create a new file called Utils.swift (File name based on your preference)

Step 2: Add following code in file

import Foundation
import UIKit

struct Utils { }
public func PrintLogs(_ message: Any, file: String = #file, function: String = #function, line: Int = #line) {
    #if DEBUG
    let className = file.components(separatedBy: "/").last ?? ""
    let classNameArr = className.components(separatedBy: ".")
    NSLog("\n\n--> Class Name:  \(classNameArr[0]) \n--> Function Name: \(function) \n--> Line: \(line)")
    print("--> Log Message: \(message)")
    #endif
}

Usage: Call PrintLogs("Hello") instead of print("Hello")

Sample Output:

--> Class Name:  HomeViewController 
--> Function Name: logTest() 
--> Line: 81
--> Log Message: Hello

Xcode takes long time to print debug results.

2 Answers2

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