Non-Empty Collection Testing

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Overview

For testing whether a collection is of a certain type and is non-empty.

Simply calling -count on an object may not yield the expected results when enumerating it if certain assumptions are also made about the object's type. For example, if a JSON response returns a dictionary when you expected an array, casting the result to an NSArray and calling count will yield a positive value, but objectAtIndex: will crash the application. These methods provide a safer check for non-emptiness of collections.

Functions
BOOL	NIIsArrayWithObjects (id object)
BOOL	NIIsSetWithObjects (id object)
BOOL	NIIsStringWithAnyText (id object)

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Function Documentation

NIIsArrayWithObjects

(

id

object

)

Tests if an object is a non-nil array which is not empty.

• [test] nil.
• [test] Empty array.
• [test] Non-array.
• [test] Array with any objects.

Definition at line 23 of file NINonEmptyCollectionTesting.m.

BOOL NIIsSetWithObjects

(

id

object

)

Tests if an object is a non-nil set which is not empty.

Definition at line 29 of file NINonEmptyCollectionTesting.m.

BOOL NIIsStringWithAnyText

(

id

object

)

Tests if an object is a non-nil string which is not empty.

Definition at line 35 of file NINonEmptyCollectionTesting.m.