fix spelling of 'iff' and 'idenifier' (#32401)

* fix spelling of 'iff' and 'idenifier'

* Keep 'iff' in comment if it means *if and only if*

src/vs/editor/common/editorCommon.ts

@@ -684,7 +684,7 @@ export interface ITextModel {
 	getFullModelRange(): Range;
 
 	/**
-	 * Returns iff the model was disposed or not.
+	 * Returns if the model was disposed or not.
 	 */
 	isDisposed(): boolean;
 
@@ -1180,7 +1180,7 @@ export interface IModel extends IReadOnlyModel, IEditableTextModel, ITextModelWi
 	onBeforeDetached(): void;
 
 	/**
-	 * Returns iff this model is attached to an editor or not.
+	 * Returns if this model is attached to an editor or not.
 	 * @internal
 	 */
 	isAttachedToEditor(): boolean;

src/vs/monaco.d.ts

@@ -1559,7 +1559,7 @@ declare module monaco.editor {
 		 */
 		getFullModelRange(): Range;
 		/**
-		 * Returns iff the model was disposed or not.
+		 * Returns if the model was disposed or not.
 		 */
 		isDisposed(): boolean;
 		/**

src/vs/platform/files/common/files.ts

@@ -368,7 +368,7 @@ export interface IBaseStat {
 export interface IFileStat extends IBaseStat {
 
 	/**
-	 * The resource is a directory. Iff {{true}}
+	 * The resource is a directory. if {{true}}
 	 * {{encoding}} has no meaning.
 	 */
 	isDirectory: boolean;

src/vs/platform/registry/common/platform.ts

@@ -20,13 +20,13 @@ export interface IRegistry {
 
 	/**
 	 * Returns true iff there is an extension with the provided id.
-	 * @param id an extension idenifier
+	 * @param id an extension identifier
 	 */
 	knows(id: string): boolean;
 
 	/**
 	 * Returns the extension functions and properties defined by the specified key or null.
-	 * @param id an extension idenifier
+	 * @param id an extension identifier
 	 */
 	as(id: string): any;
 	as<T>(id: string): T;

src/vs/platform/workspace/common/workspace.ts

@@ -17,17 +17,17 @@ export interface IWorkspaceContextService {
 	_serviceBrand: any;
 
 	/**
-	 * Returns iff the application was opened with a workspace or not.
+	 * Returns if the application was opened with a workspace or not.
 	 */
 	hasWorkspace(): boolean;
 
 	/**
-	 * Returns iff the application was opened with a folder.
+	 * Returns if the application was opened with a folder.
 	 */
 	hasFolderWorkspace(): boolean;
 
 	/**
-	 * Returns iff the application was opened with a workspace that can have one or more folders.
+	 * Returns if the application was opened with a workspace that can have one or more folders.
 	 */
 	hasMultiFolderWorkspace(): boolean;
 
@@ -65,7 +65,7 @@ export interface IWorkspaceContextService {
 	getRoot(resource: URI): URI;
 
 	/**
-	 * Returns iff the provided resource is inside the workspace or not.
+	 * Returns if the provided resource is inside the workspace or not.
 	 */
 	isInsideWorkspace(resource: URI): boolean;
 

src/vs/workbench/api/node/extHostDocumentSaveParticipant.ts

@@ -149,7 +149,7 @@ export class ExtHostDocumentSaveParticipant extends ExtHostDocumentSaveParticipa
 				}
 			}
 
-			// apply edits iff any and iff document
+			// apply edits if any and if document
 			// didn't change somehow in the meantime
 			if (edits.length === 0) {
 				return undefined;

src/vs/workbench/common/actionRegistry.ts

@@ -49,12 +49,12 @@ export interface IWorkbenchActionRegistry {
 	getWorkbenchActions(): SyncActionDescriptor[];
 
 	/**
-	 * Returns the alias associated with the given action or null iff none.
+	 * Returns the alias associated with the given action or null if none.
 	 */
 	getAlias(actionId: string): string;
 
 	/**
-	 * Returns the category for the given action or null iff none.
+	 * Returns the category for the given action or null if none.
 	 */
 	getCategory(actionId: string): string;
 }

src/vs/workbench/services/editor/common/editorService.ts

@@ -36,9 +36,9 @@ export interface IWorkbenchEditorService extends IEditorService {
 	getVisibleEditors(): IEditor[];
 
 	/**
-	 * Returns iff the provided input is currently visible.
+	 * Returns if the provided input is currently visible.
 	 *
-	 * @param includeDiff iff set to true, will also consider diff editors to find out if the provided
+	 * @param includeDiff if set to true, will also consider diff editors to find out if the provided
 	 * input is opened either on the left or right hand side of the diff editor.
 	 */
 	isVisible(input: IEditorInput, includeDiff: boolean): boolean;

src/vs/workbench/services/part/common/partService.ts

@@ -67,7 +67,7 @@ export interface IPartService {
 	getContainer(part: Parts): HTMLElement;
 
 	/**
-	 * Returns iff the part is visible.
+	 * Returns if the part is visible.
 	 */
 	isVisible(part: Parts): boolean;
 

src/vs/workbench/services/textfile/common/textfiles.ts

@@ -266,7 +266,7 @@ export interface ITextFileService extends IDisposable {
 	 * Saves the resource.
 	 *
 	 * @param resource the resource to save
-	 * @return true iff the resource was saved.
+	 * @return true if the resource was saved.
 	 */
 	save(resource: URI, options?: ISaveOptions): TPromise<boolean>;
 
@@ -274,7 +274,7 @@ export interface ITextFileService extends IDisposable {
 	 * Saves the provided resource asking the user for a file name.
 	 *
 	 * @param resource the resource to save as.
-	 * @return true iff the file was saved.
+	 * @return true if the file was saved.
 	 */
 	saveAs(resource: URI, targetResource?: URI): TPromise<URI>;
 

src/vs/workbench/services/untitled/common/untitledEditorService.ts

@@ -62,7 +62,7 @@ export interface IUntitledEditorService {
 	getDirty(resources?: URI[]): URI[];
 
 	/**
-	 * Returns true iff the provided resource is dirty.
+	 * Returns true if the provided resource is dirty.
 	 */
 	isDirty(resource: URI): boolean;