I am just starting and am confused about what to do with this error.
2018-03-03 17:29:47.223293-0500 Chewculator[14245:374098] *** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<Chewculator.ViewController 0x7f855276c0e0> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key allclearPressed.'
*** First throw call stack:
(
0 CoreFoundation 0x0000000108dfe12b __exceptionPreprocess + 171
1 libobjc.A.dylib 0x00000001049f7f41 objc_exception_throw + 48
2 CoreFoundation 0x0000000108dfe079 -[NSException raise] + 9
3 Foundation 0x0000000104416a63 -[NSObject(NSKeyValueCoding) setValue:forKey:] + 292
4 UIKit 0x0000000105b47117 -[UIViewController setValue:forKey:] + 87
5 UIKit 0x0000000105e38c2d -[UIRuntimeOutletConnection connect] + 109
6 CoreFoundation 0x0000000108da13cd -[NSArray makeObjectsPerformSelector:] + 317
7 UIKit 0x0000000105e375e3 -[UINib instantiateWithOwner:options:] + 1856
8 UIKit 0x0000000105b4e3ff -[UIViewController _loadViewFromNibNamed:bundle:] + 383
9 UIKit 0x0000000105b4ed2b -[UIViewController loadView] + 177
10 UIKit 0x0000000105b4f05c -[UIViewController loadViewIfRequired] + 195
11 UIKit 0x0000000105b4f8b9 -[UIViewController view] + 27
12 UIKit 0x0000000105a1a7cf -[UIWindow addRootViewControllerViewIfPossible] + 122
13 UIKit 0x0000000105a1aed7 -[UIWindow _setHidden:forced:] + 294
14 UIKit 0x0000000122342bdd -[UIWindowAccessibility _orderFrontWithoutMakingKey] + 86
15 UIKit 0x0000000105a2de54 -[UIWindow makeKeyAndVisible] + 42
16 UIKit 0x00000001059a08b8 -[UIApplication _callInitializationDelegatesForMainScene:transitionContext:] + 4737
17 UIKit 0x00000001059a5aeb -[UIApplication _runWithMainScene:transitionContext:completion:] + 1720
18 UIKit 0x0000000105d6f6f8 __111-[__UICanvasLifecycleMonitor_Compatability _scheduleFirstCommitForScene:transition:firstActivation:completion:]_block_invoke + 924
19 UIKit 0x00000001061454c8 +[_UICanvas _enqueuePostSettingUpdateTransactionBlock:] + 153
20 UIKit 0x0000000105d6f2f1 -[__UICanvasLifecycleMonitor_Compatability _scheduleFirstCommitForScene:transition:firstActivation:completion:] + 249
21 UIKit 0x0000000105d6fb6b -[__UICanvasLifecycleMonitor_Compatability activateEventsOnly:withContext:completion:] + 696
22 UIKit 0x00000001066eda69 __82-[_UIApplicationCanvas _transitionLifecycleStateWithTransitionContext:completion:]_block_invoke + 262
23 UIKit 0x00000001066ed922 -[_UIApplicationCanvas _transitionLifecycleStateWithTransitionContext:completion:] + 444
24 UIKit 0x00000001063ca9c8 __125-[_UICanvasLifecycleSettingsDiffAction performActionsForCanvas:withUpdatedScene:settingsDiff:fromSettings:transitionContext:]_block_invoke + 221
25 UIKit 0x00000001065c9b06 _performActionsWithDelayForTransitionContext + 100
26 UIKit 0x00000001063ca88b -[_UICanvasLifecycleSettingsDiffAction performActionsForCanvas:withUpdatedScene:settingsDiff:fromSettings:transitionContext:] + 231
27 UIKit 0x0000000106144b25 -[_UICanvas scene:didUpdateWithDiff:transitionContext:completion:] + 392
28 UIKit 0x00000001059a436a -[UIApplication workspace:didCreateScene:withTransitionContext:completion:] + 523
29 UIKit 0x0000000105f7f605 -[UIApplicationSceneClientAgent scene:didInitializeWithEvent:completion:] + 369
30 FrontBoardServices 0x000000010bdc1cc0 -[FBSSceneImpl _didCreateWithTransitionContext:completion:] + 338
31 FrontBoardServices 0x000000010bdca7b5 __56-[FBSWorkspace client:handleCreateScene:withCompletion:]_block_invoke_2 + 235
32 libdispatch.dylib 0x0000000109f201ba _dispatch_client_callout + 8
33 libdispatch.dylib 0x0000000109f25468 _dispatch_block_invoke_direct + 324
34 FrontBoardServices 0x000000010bdf6498 __FBSSERIALQUEUE_IS_CALLING_OUT_TO_A_BLOCK__ + 24
35 FrontBoardServices 0x000000010bdf614e -[FBSSerialQueue _performNext] + 464
36 FrontBoardServices 0x000000010bdf66bd -[FBSSerialQueue _performNextFromRunLoopSource] + 45
37 CoreFoundation 0x0000000108da1101 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
38 CoreFoundation 0x0000000108e40f71 __CFRunLoopDoSource0 + 81
39 CoreFoundation 0x0000000108d85a19 __CFRunLoopDoSources0 + 185
40 CoreFoundation 0x0000000108d84fff __CFRunLoopRun + 1279
41 CoreFoundation 0x0000000108d84889 CFRunLoopRunSpecific + 409
42 GraphicsServices 0x000000010c68a9c6 GSEventRunModal + 62
43 UIKit 0x00000001059a75d6 UIApplicationMain + 159
44 Chewculator 0x00000001040e25f7 main + 55
45 libdyld.dylib 0x0000000109f94d81 start + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb)
It seems to be from this area.
}
func allclearPressed(_ sender: RoundButton) {
runningNumber = ""
leftValue = ""
rightValue = ""
result = ""
currentOperation = .NULL
outputlab.text = "0"
}
func dotPressed(_ sender: RoundButton) {
if runningNumber.count <= 7 {
runningNumber += "."
outputlab.text = runningNumber
}
}
