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Check OS version in Swift?
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func runNewCode() {
guard #available(iOS 13.0, *) else {
fatalError()
}
// do new stuff
}
func runLegacyCode() {
// do old stuff
}
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How do I use the conditional operator (? :) in Ruby?
... write it on multiple lines:
(true) ? 1 : 0
Normally Ruby will raise an error if you attempt to split it across multiple lines, but you can use the \ line-continuation symbol at the end of a line and Ruby will be happy:
(true) \
? 1 \
: 0
This is a simple example, but it can be very u...
How to make HTML input tag only accept numerical values?
...rainbowlabs I am using firefox. Also, enter 6abc, it will not show you the error
– Akshay
Apr 9 '14 at 17:29
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Nested JSON objects - do I have to use arrays for everything?
... have to make arrays out of everything? For my object to be parsed without error I seem to need a structure like this:
3 An...
iOS Detect 3G or WiFi
...t worked!!! Had to do some fixing up of the reachability files as they had errors for iOS5 in it - but I am so happy right now. Unfortunately I can only give you 1 up vote:-)
– jwknz
Oct 29 '11 at 20:19
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What does “Changes not staged for commit” mean
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You may see this error when you have added a new file to your code and you're now trying to commit the code without staging(adding) it.
To overcome this, you may first add the file by using git add (git add your_file_name.py) and then commit...
Can you use @Autowired with static fields?
...ring static field (or constant) will be ignored, but also won't create any error:
@Autowired
private static String staticField = "staticValue";
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MongoDB Show all contents from all collections
... I replaced db name with my db name, which kept on giving me errors. So don't do stupid things like me :D , stick to db.<collection_name>.find();
– adam shamsudeen
Nov 29 '18 at 14:37
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presentModalViewController:Animated is deprecated in ios6
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Im getting this error 'UIApplicationInvalidInterfaceOrientation', reason: 'preferredInterfaceOrientationForPresentation must return a supported interface orientation!'
– Ram
Apr 8 '13 at 8:14
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Unable to access JSON property with “-” dash
...son.first.second.third['comment']
and will will give you the 'undefined' error.
This is the correct way
json['first']['second']['third']['comment']
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