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Fatal error: unexpectedly found nil while unwrapping an Optional values [duplicate]
...d it, and the runtime returns a nil that should never happen. It's a fatal error, the app crashes, and the Console output gives:
fatal error: unexpectedly found nil while unwrapping an Optional value
Bottom line: check your cell reuse identifier specified in the .storyboard, Xib, or in code, and ...
JavaScript isset() equivalent
...
the problem with this is that you get an error when you try to check deeper properties, for example: obj.thisdoesntexist.foo !== undefined. In PHP you can use isset or empty and safely at any deep.
– Enrique
Aug 21 '11 at 16:35...
How to create local notifications?
...de works fine for iOS 7.x and below but for iOS 8 it will prompt following error on console:
Attempting to schedule a local notification with an alert but haven't received permission from the user to display alerts
This means you need register for local notification. This can be achieved usin...
Checking Bash exit status of several commands efficiently
...
"$@"
local status=$?
if (( status != 0 )); then
echo "error with $1" >&2
fi
return $status
}
mytest "$command1"
mytest "$command2"
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Makefile variable as prerequisite
...
This will cause a fatal error if ENV is undefined and something needs it (in GNUMake, anyway).
.PHONY: deploy check-env
deploy: check-env
...
other-thing-that-needs-env: check-env
...
check-env:
ifndef ENV
$(error ENV is undefined)
endif
(...
Xcode - How to fix 'NSUnknownKeyException', reason: … this class is not key value coding-compliant f
...er may have the wrong class in your xib.
I downloaded your project.
The error you are getting is
'NSUnknownKeyException', reason: '[<UIViewController 0x3927310> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key string.'
It is caused by the Second vi...
“did you run git update-server-info” error on a Github repository
...b Gui from their website to manage my repos, and I'm getting the following error:
20 Answers
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Using HTML5/Canvas/JavaScript to take in-browser screenshots
... the getUserMedia with chromeMediaSource only for Electron.js
FIX 2: Throw error instead return null object
FIX 3: Fix demo to prevent the error: getDisplayMedia must be called from a user gesture handler
// docs: https://developer.mozilla.org/en-US/docs/Web/API/MediaDevices/getDisplayMedia
// see: ...
The forked VM terminated without saying properly goodbye. VM crash or System.exit called
Please help me to solve this issue. I do not exactly understand what the error in the log means.
48 Answers
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How to print an exception in Python?
How can I print the error/exception in my except: block?
8 Answers
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