[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2021-02-11 UTC."],[],[],null,["# FirebaseMLVision Framework Reference\n\nType Definitions\n================\n\nThe following type definitions are available globally.\n- `\n ``\n ``\n `\n\n ### [VisionBarcodeDetectionCallback](#/c:FIRVisionBarcodeDetector.h@T@FIRVisionBarcodeDetectionCallback)\n\n `\n ` \n A block containing an array of barcodes or `nil` if there's an error. \n\n #### Declaration\n\n Swift \n\n typealias VisionBarcodeDetectionCallback = ([FIRVisionBarcode]?, Error?) -\u003e Void\n\n #### Parameters\n\n |------------------|-------------------------------------------------------------------------|\n | ` `*barcodes*` ` | Array of barcodes detected in the image or `nil` if there was an error. |\n | ` `*error*` ` | The error or `nil`. |\n\n- `\n ``\n ``\n `\n\n ### [VisionCloudLandmarkDetectionCompletion](#/c:FIRVisionCloudLandmarkDetector.h@T@FIRVisionCloudLandmarkDetectionCompletion)\n\n `\n ` \n A block containing an array of landmark or `nil` if there's an error. \n\n #### Declaration\n\n Swift \n\n typealias VisionCloudLandmarkDetectionCompletion = ([FIRVisionCloudLandmark]?, Error?) -\u003e Void\n\n #### Parameters\n\n |-------------------|-------------------------------------------------------------------------|\n | ` `*landmarks*` ` | Array of landmark detected in the image or `nil` if there was an error. |\n | ` `*error*` ` | The error or `nil`. |\n\n- `\n ``\n ``\n `\n\n ### [VisionDocumentTextRecognitionCallback](#/c:FIRVisionDocumentTextRecognizer.h@T@FIRVisionDocumentTextRecognitionCallback)\n\n `\n ` \n The callback to invoke when the document text recognition completes. \n\n #### Declaration\n\n Swift \n\n typealias VisionDocumentTextRecognitionCallback = (FIRVisionDocumentText?, Error?) -\u003e Void\n\n #### Parameters\n\n |---------------|-----------------------------------------------------------------------------------------------|\n | ` `*text*` ` | Recognized document text in the image or `nil` if there was an error or no text was detected. |\n | ` `*error*` ` | The error or `nil`. |\n\n- `\n ``\n ``\n `\n\n ### [FaceContourType](#/c:FIRVisionFaceContour.h@T@FIRFaceContourType)\n\n `\n ` \n Facial contour types. \n\n #### Declaration\n\n Swift \n\n struct FaceContourType : _ObjectiveCBridgeable, Hashable, Equatable, _SwiftNewtypeWrapper, RawRepresentable\n\n- `\n ``\n ``\n `\n\n ### [VisionFaceDetectionCallback](#/c:FIRVisionFaceDetector.h@T@FIRVisionFaceDetectionCallback)\n\n `\n ` \n A block containing an array of faces or `nil` if there's an error. \n\n #### Declaration\n\n Swift \n\n typealias VisionFaceDetectionCallback = ([FIRVisionFace]?, Error?) -\u003e Void\n\n #### Parameters\n\n |---------------|----------------------------------------------------------------------|\n | ` `*faces*` ` | Array of faces detected in the image or `nil` if there was an error. |\n | ` `*error*` ` | The error or `nil`. |\n\n- `\n ``\n ``\n `\n\n ### [FaceLandmarkType](#/c:FIRVisionFaceLandmark.h@T@FIRFaceLandmarkType)\n\n `\n ` \n Type of all facial landmarks. \n\n #### Declaration\n\n Swift \n\n struct FaceLandmarkType : _ObjectiveCBridgeable, Hashable, Equatable, _SwiftNewtypeWrapper, RawRepresentable\n\n- `\n ``\n ``\n `\n\n ### [VisionImageLabelerCallback](#/c:FIRVisionImageLabeler.h@T@FIRVisionImageLabelerCallback)\n\n `\n ` \n A block containing an array of labels or `nil` if there's an error. \n\n #### Declaration\n\n Swift \n\n typealias VisionImageLabelerCallback = ([FIRVisionImageLabel]?, Error?) -\u003e Void\n\n #### Parameters\n\n |----------------|-----------------------------------------------------------------------|\n | ` `*labels*` ` | Array of labels detected in the image or `nil` if there was an error. |\n | ` `*error*` ` | The error or `nil`. |\n\n- `\n ``\n ``\n `\n\n ### [VisionTextRecognitionCallback](#/c:FIRVisionTextRecognizer.h@T@FIRVisionTextRecognitionCallback)\n\n `\n ` \n The callback to invoke when the text recognition completes. \n\n #### Declaration\n\n Swift \n\n typealias VisionTextRecognitionCallback = (FIRVisionText?, Error?) -\u003e Void\n\n #### Parameters\n\n |---------------|--------------------------------------------------------------------------------------|\n | ` `*text*` ` | Recognized text in the image or `nil` if there was an error or no text was detected. |\n | ` `*error*` ` | The error or `nil`. |"]]
