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I have one single menu which is shared by 3 table views as context menu. How do I know programatically on which table view user brings up the context menu?I know I could clone the one menu 2 times and assign a unique id for each of them and thus I can distinguish them, but I'd like to keep just one instance around.

I have a menu that is set as context menu of several NSTableViews, like below: let appDelegate = NSApp.delegate as! AppDelegate self.localeTable.menu = appDelegate.selectMenu self.fileTable.menu = appDelegate.selectMenu self.stringsTable.menu = appDelegate.selectMenuNow my problem is that in the menu item's event handler, how do I know which NSTableView is current event for?@IBAction func selectMenuItem_select(_ sender: Any) }

I want to use code to read in XLIFF files, translate the text (by using some HTTP translator service) and write back. Does Cocoa provide any functions to manipulate exported XLIFF files?

I'm not familiar with commandline toolset of gcc/llvm. It is so simple but yet not working as expected. I am becoming suspicious about everything - maybe whole macOS is corrupt?The problem is that the command:ar rcu libt.a @responsefiledoes not work; the error is ar: @responsefile: No such file or directory. But responsefile is right there. I tried 'gcc @testfile' and it works. Help!

I am currently using https://itunes.apple.com/lang/app/id123456789 on my personal website for app links (in several languages). Each language tag is hardcoded into code. I wonder if App Store support a language neutral or automatic app URL that respects user browser language. I mean, if user's browser uses English, then ideally the URL display English content; if Spanish, then it displays Spanish content, etc. Is it possible?

It seems Xcode always resolve a symbolic link to its real path. For example, I have ~/Build linked to a directory on another volume (partition), when I "Open In Finder" on a project, the path points to the real directory. I'd prefer the shorter way of ~/Build. Is there any option that instructs Xcode not to follow symbolic links?

In another thread about NSDate memory leak, I learned that sometimes I need to wrap code inside an @autoreleasepool. But I get more puzzled when I really try to refactor my code.Here is my problem. I have a NSCondition dervived class which implements a convenience method:- (BOOL)wait:(NSTimeInterval)timeToWait { NSDate* date = [[NSDate date] dateByAddingTimeInterval:timeToWait]; BOOL f = [self waitUntilDate:date]; return f; }In some place, I need to poll on something (don't argue with me about disadvantages about polling):- (void)monitor { while (YES) { [_guard lock]; if(_guard.stop) { break; } [_guard wait:DEFAULT_POLL_INTERVAL]; [self check_visibility]; [_guard unlock]; } }Now I'm bewildered about where to put @autoreleasepool, in the outer loop or directly in the wait: method.Thanks for any suggestions.

I once asked a question about how to detect memory leaks when app is running. Thanks for someone who points out that Instruments is the right tool for this purpose.Unfortunately by using Instruments, no explicit memory leaks are detected. But I found a very bewildering problem. It seems [NSDate date] leaks 16 bytes memory on each call. I soon constructed a very simple app to verify this:- (void)viewDidLoad { [super viewDidLoad]; static NSOperationQueue* q; q = [[NSOperationQueue alloc] init]; [q addOperationWithBlock:^{ while (YES) { NSDate* date = [NSDate date]; } }]; }When the simple app runs, in just about 10 seconds, it's memory usage rockets high to more than 1GB. That explains why one of my App Store app eats up memory gradually on daily usage.I think it is a glaring bug because the code is so simple that it leaves no room for coding mistakes. But, I post it here so that this can be confirmed so that I can submit a formal bug report to Apple.EDIT: it seems the bug occurs after I attached to the test app using Instruments and then stops recoding.EDIT: It seems the above simple code does not always reproduce the bug. Please try the follow:// Replace the line NSDate* date = [NSDate date] with following line NSDateComponents* parts = [BingImageDate getDateParts:[NSDate date] ofCulture:@"en-US"];//BingImageDate.h #import <Foundation/Foundation.h> @interface BingImageDate : NSObject + (NSDateComponents *)getDateParts:(NSDate *)date ofCulture:(NSString*)culture; @end//BingImageDate.m #import "BingImageDate.h" static NSCalendar* _gregorian; static NSTimeZone* _TZ_PST; static NSDictionary* _cultureHourOffset; @implementation BingImageDate + (void)initialize { _gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSCalendarIdentifierGregorian]; _gregorian.timeZone = [NSTimeZone timeZoneForSecondsFromGMT:0]; _TZ_PST = [NSTimeZone timeZoneWithAbbreviation:@"PST"]; _cultureHourOffset = @{ @"de-DE": @1500, @"en-AU": @700, @"en-CA": @2100, @"en-GB": @1600, @"en-NZ": @0, @"en-US": @0, @"fr-FR": @1500, @"hi-IN": @1130, @"ja-JP": @800, @"pt-BR": @2000, @"zh-CN": @900, }; } + (NSDateComponents *)getDateParts:(NSDate *)date ofCulture:(NSString*)culture { NSNumber* cultureHourOffset = _cultureHourOffset[culture]; NSDateComponents* parts = [_gregorian componentsInTimeZone:_TZ_PST fromDate:date]; NSInteger hourOffset = parts.hour * 100 + parts.minute; if (hourOffset < cultureHourOffset.integerValue) { NSDate* pivotDate = [_gregorian dateByAddingUnit:NSCalendarUnitDay value:-1 toDate:parts.date options:0]; parts = [_gregorian componentsInTimeZone:_TZ_PST fromDate:pivotDate]; } return parts; } @end

I had two rare customer report about one of my apps that after long time of running, the app eats up about 2GB memory. I'm quite puzzled in that I do not observe this problem for the past 2 years and I have only 2 customer reports on this problem.The only place that I can think of that eats up memory gradually is one of the method of NSURLConnectionDataDelegate:- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data { [_data appendData:data]; }The data then is stored in an NSMutableDictionary which is then added to a list. After verything is done, the dictionary is removed off list. That should work without problem and I cannot think of any problem that can cause memory leaks.Any suggestions will be appreciated.