ios check for null or empty string

+(BOOL)stringIsNilOrEmpty:(NSString*)aString { return!( length] == 0) { // ...

+(BOOL)stringIsNilOrEmpty:(NSString*)aString { return!( length] == 0) { // Do stuff with the string } else { // The string is empty or nil here }.

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There are three possible interpretations of "null" NSString: . el...

There are three possible interpretations of "null" NSString: . else { NSLog(@"isNullOrEmpty, value not a string"); } } return retVal; } @end.

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This is a quick tip that will allow you to check whether an NSString is emp...

This is a quick tip that will allow you to check whether an NSString is empty. This will check if it's a valid but empty string (@””) as well as if its nil, since calling.

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But to my surprise this didn't work – because my string was (null) rat...

But to my surprise this didn't work – because my string was (null) rather than “empty” or nil, which in Objective C are not the same thing.

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Categories: iOS (). How to test for a (null) string in Objective C. I wante...

Categories: iOS (). How to test for a (null) string in Objective C. I wanted to test if a string has a value when it's returned from Core Data. surprise this didn't work – because my string was (null) rather than “empty” or nil.

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April edited April in iOS SDK Development. Hi Folks, how can I prevent my a...

April edited April in iOS SDK Development. Hi Folks, how can I prevent my app to show "(null)" when a NSString is empty. empty string (@";") are two different things; you're checking for an empty string, not null.

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Swift tutorial: How to Check if string is empty - try the code online....

Swift tutorial: How to Check if string is empty - try the code online.

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FAQ. Join us on #subreddit channel at dwn.220.v.ua on Slack! . The approach...

FAQ. Join us on #subreddit channel at dwn.220.v.ua on Slack! . The approach isn't dwn.220.v.ua empty strings are annoying if you don't.

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Is this shorthand for: (string == nil || dwn.220.v.uay) Keywords: swift, sw...

Is this shorthand for: (string == nil || dwn.220.v.uay) Keywords: swift, swiftlang, ios, os x, apps, apple, mac, iphone, ipad. created by To determine whether string is either nil or empty, you would use the following: (string.

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Using Swift I want to check to see if a date is present before doing I thin...

Using Swift I want to check to see if a date is present before doing I think it can only be a NSDate or nil, but since I am very new to core data and iOS programming I may be wrong. The idea So it'll never be an empty string.

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iOS Programming: The Big Nerd Ranch Guide (5th Edi Thus, my main question i...

iOS Programming: The Big Nerd Ranch Guide (5th Edi Thus, my main question is why is the check for text not being empty needed? In this case, the condition is: If text is non-nil AND text is not a blank String, then execute the if In your examples, you always assigned something (or null/empty) to your.

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First of all, rather than checking if our string is equal to "", ...

First of all, rather than checking if our string is equal to "", we should check its length. 0) { errorDescription = "Pass code can not be blank.

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The iOS app Workflow is the greatest thing since whatever the last great th...

The iOS app Workflow is the greatest thing since whatever the last great thing was, But If wants to check whether its input string contains another string. anything, and you may have also have noticed that an empty string doesn't, either.

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In Jay's tutorial, textInputValue (in dwn.220.v.ua) is set to null ini...

In Jay's tutorial, textInputValue (in dwn.220.v.ua) is set to null initially and . a nil check, or if your JS coerces null to an empty string and ensures.

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I have simple code to check for a null value or empty string: if (dwn.220.v...

I have simple code to check for a null value or empty string: if (dwn.220.v.ua1 It fails intermittently on a real device, both android and iOS.

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