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FIRDocumentChange
@interfaceFIRDocumentChange:NSObject
A DocumentChange represents a change to the documents matching a query. It contains the
document affected and the type of change that occurred (added, modified, or removed).
The index of the changed document in the result set immediately prior to this DocumentChange
(i.e. supposing that all prior DocumentChange objects have been applied). NSNotFound for
DocumentChangeTypeAdded events.
The index of the changed document in the result set immediately after this DocumentChange
(i.e. supposing that all prior DocumentChange objects and the current DocumentChange object
have been applied). NSNotFound for DocumentChangeTypeRemoved events.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-03-11 UTC."],[],[],null,["# FirebaseFirestore Framework Reference\n\nFIRDocumentChange\n=================\n\n\n @interface FIRDocumentChange : NSObject\n\nA `DocumentChange` represents a change to the documents matching a query. It contains the\ndocument affected and the type of change that occurred (added, modified, or removed).\n- `\n ``\n ``\n `\n\n ### [type](#/c:objc(cs)FIRDocumentChange(py)type)\n\n `\n ` \n The type of change that occurred (added, modified, or removed). \n\n #### Declaration\n\n Objective-C \n\n @property (nonatomic, readonly) ../Enums/FIRDocumentChangeType.html type;\n\n- `\n ``\n ``\n `\n\n ### [document](#/c:objc(cs)FIRDocumentChange(py)document)\n\n `\n ` \n The document affected by this change. \n\n #### Declaration\n\n Objective-C \n\n @property (nonatomic, strong, readonly) ../Classes/FIRQueryDocumentSnapshot.html *_Nonnull document;\n\n- `\n ``\n ``\n `\n\n ### [oldIndex](#/c:objc(cs)FIRDocumentChange(py)oldIndex)\n\n `\n ` \n The index of the changed document in the result set immediately prior to this `DocumentChange`\n (i.e. supposing that all prior `DocumentChange` objects have been applied). `NSNotFound` for\n `DocumentChangeTypeAdded` events. \n\n #### Declaration\n\n Objective-C \n\n @property (nonatomic, readonly) NSUInteger oldIndex;\n\n- `\n ``\n ``\n `\n\n ### [newIndex](#/c:objc(cs)FIRDocumentChange(py)newIndex)\n\n `\n ` \n The index of the changed document in the result set immediately after this `DocumentChange`\n (i.e. supposing that all prior `DocumentChange` objects and the current `DocumentChange` object\n have been applied). `NSNotFound` for `DocumentChangeTypeRemoved` events. \n\n #### Declaration\n\n Objective-C \n\n @property (nonatomic, readonly) NSUInteger newIndex;"]]
