![]() When a conference has the same end and start dates (for example, Mobilization or Mobile Optimized 2019), the execution will stop. Resume the program execution F9 and choose other conferences from the list. Firstly, change the result value at runtime using the Evaluate and log field of the Breakpoints dialog Ctrl+Shift+F8: To fix the bug, write a condition that handles the equal start and end values. For example, you can also add the name variable to see the name of the current conference. You can add any variable you want to observe to watches. If the Watches tab is currently hidden, click the button and select Watches in the list. To do this, right-click the variable on the Variables tab and select Add to Watches. Now when the program is paused, and the Debugger tab is available, let’s add the result variable to watches, which will allow us to observe the variable state in a separate tab. The program execution will stop only when the specified condition is satisfied, for example, on selecting the Mobilization conference: If you just want to use it, jump to the Authentication Guide. If you would like to understand how it does this, read this document from top to bottom. Run the application in debug mode Shift+F9 and select random conferences from the list. AuthSession is the easiest way to add web browser based authentication (for example, browser-based OAuth flows) to your app, built on top of WebBrowser and Crypto. For this purpose, we can create a special condition: right-click the breakpoint and in the Condition field type end = start: We want the new breakpoint to stop the program execution only when the end and start dates of the conference are the same. Set a new breakpoint at line 21 ( Ctrl+F8) and remove the previous one at line 17 by clicking its icon in the gutter. For convenience, we will display the conference data on the Watches tab. Let's add a conditional breakpoint that will stop the program execution only when calling textDates() for one-day conferences. This happens because the textDates() method doesn’t handle the conferences with the same start and end dates correctly. Set a breakpoint right before the decode() method is called, namely, at the following line: Let's try to use the formatted decoding strategy instead by injecting new code at runtime. It will bring you to the dateDecodingStrategy property declaration in the Foundation.swift file. Swift development is like embarking on a grand adventure, and every adventurer needs a trusty sidekick. Get ready to witness a battle of IDEs where we unveil the best tool to supercharge your Swift development journey. And in the other corner, we have the rising contender, AppCode. For example, choose dateDecodingStrategy and press F4. In one corner, we have the undisputed champion, Xcode. You can select a necessary symbol on the Variables tab and press F4 (or select Jump to Source from the context menu) to navigate to its source code. We see that our JSONDecoder uses the deferredToDate decoding strategy that can handle dates in double format only, whereas we have string date values in our JSON. If the value is truncated, click View to open it in a popup: You can see all the properties of the JSONDecoder object when expanding this variable. The error that we’ve got ( Expected to decode Double but found a string/data instead) most likely relates to the JSONDecoder object stored in the decoder variable. ![]() The Threads & Variables tab displays a stack of method/function calls on the left and a list of variables available in the current context on the right. The program execution will stop at the line that throws the error, and the Debug tool window will appear: For example, you can add breakpoints that hit only when encountering an unhandled Swift error ( Swift) or an Objective-C exception ( Objective-C).Ĭlick Done to apply the changes and start a debugging session by pressing Shift+F9 or clicking on the toolbar. You can add several exception breakpoint with different settings. This will enable a default exception breakpoint which hits if any exception is thrown: In the Breakpoints dialog that opens, select the Exception Breakpoints checkbox on the left. Let's set an exception breakpoint to locate the code that throws this error: Set an exception breakpointįrom the main menu, select Run | View Breakpoints or press Ctrl+Shift+F8. UnderlyingError: nil)): file /path/to/the/project/ac_tutorial_debugging/iOSConferences/Model/Data.swift, line 27 TypeMismatch(Swift.Double, (codingPath:, debugDescription: "Expected to decode Double but found a string/data instead.", Fatal error: Cannot parse conferencesData.json: Array: src/app/:8:0-63 - Error: Module not found: Error: Package path. ![]() I've gone through similar errors in SO but after installing, deleting node-modules, package-lock.json any installing it again, I still can't get rid of the error:
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