大约有 40,000 项符合查询结果(耗时:0.0569秒) [XML]

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How do I hide a menu item in the actionbar?

... Get a MenuItem pointing to such item, call setVisible on it to adjust its visibility and then call invalidateOptionsMenu() on your activity so the ActionBar menu is adjusted accordingly. Update: A MenuItem is not a regular view that's part of your layout. Its som...
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JSON formatter in C#?

... Cool! Looks like that was added in .NET Core 3.0 actually, which was released September 23, 2019 – mpen Aug 25 at 0:34 add a comment  |...
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what is the unsigned datatype?

...or unsigned long long int — float — double — long double_Bool — float _Complex — double _Complex — long double _Complex — atomic type specifier — struct or union specifier — enum specifier — typedef name So in case of unsigned int we can either writ...
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linq where list contains any in list

... Sounds like you want: var movies = _db.Movies.Where(p => p.Genres.Intersect(listOfGenres).Any()); share | improve this answer | fo...
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@try - catch block in Objective-C

... All work perfectly :) NSString *test = @"test"; unichar a; int index = 5; @try { a = [test characterAtIndex:index]; } @catch (NSException *exception) { NSLog(@"%@", exception.reason); NSLog(@"Char at in...
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The role of #ifdef and #ifndef

...o do something like that with the old #ifdef/#ifndef pair. #if defined(ORA_PROC) || defined(__GNUC) && __GNUC_VERSION > 300 share | improve this answer | follow ...
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MySQL Fire Trigger for both Insert and Update

...me. 1. Define the INSERT trigger: DELIMITER // DROP TRIGGER IF EXISTS my_insert_trigger// CREATE DEFINER=root@localhost TRIGGER my_insert_trigger AFTER INSERT ON `table` FOR EACH ROW BEGIN -- Call the common procedure ran if there is an INSERT or UPDATE on `table` -- NEW.id is an...
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How to get current date & time in MySQL?

... You can use NOW(): INSERT INTO servers (server_name, online_status, exchange, disk_space, network_shares, c_time) VALUES('m1', 'ONLINE', 'exchange', 'disk_space', 'network_shares', NOW()) share ...
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What's the recommended way to connect to MySQL from Go?

... on go-wiki. Import when using MyMySQL : import ( "database/sql" _ "github.com/ziutek/mymysql/godrv" ) Import when using Go-MySQL-Driver : import ( "database/sql" _ "github.com/go-sql-driver/mysql" ) Connecting and closing using MyMySQL : con, err := sql.Open("mymysql", datab...
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Is it possible to set the equivalent of a src attribute of an img tag in CSS?

...urse you can use padding-left / padding-top to make rectangular images. Finally, the new image is put there using background. If the new background image is too large or too small, I recommend using background-size for example: background-size:cover; which fits your image into the allotted space. ...