大约有 800 项符合查询结果（耗时：0.0239秒） [XML]
dismissModalViewControllerAnimated deprecated
...upgrade all their devices every 3 years so many of us have some older (pre 5.0) devices. Still, as much as it pains me to say it, you need to consider if it is worth targeting below 5.0. There are many new and cool APIs not available below 5.0. And Apple is continually making it harder to target the...
What is a difference between
... myLongs = {1L, 2L, 3L, 4L, 5L};
Double[] myDoubles = {1.0, 2.0, 3.0, 4.0, 5.0};
System.out.println(sum(myInts));
System.out.println(sum(myLongs));
System.out.println(sum(myDoubles));
But if you attempt to implement the same code with generic collections, you will not succeed:
static long sum(List...
What's a good rate limiting algorithm?
... which makes sense because the queue might get arbitrarily large):
rate = 5.0; // unit: messages
per = 8.0; // unit: seconds
allowance = rate; // unit: messages
last_check = now(); // floating-point, e.g. usec accuracy. Unit: seconds
when (message_received):
current = now();
time_passed = cur...
Display open transactions in MySQL
...n a connection breaks
From the MySQL docs: http://dev.mysql.com/doc/refman/5.0/en/mysql-tips.html
4.5.1.6.3. Disabling mysql Auto-Reconnect
If the mysql client loses its connection to the server while sending a statement, it immediately and automatically tries to reconnect once to the serve...
Why do some C# lambda expressions compile to static methods?
...7, Local variables, and sec. N.15.5.1, Captured outer variables, in the C# 5.0 specification).
Note that the C# specification only talks about anonymous methods being converted to "expression trees", not "anonymous classes". While the expression tree could be represented as additional C# classes, f...
MySQL, update multiple tables with one query
...ourse. You can read more about joins here: http://dev.mysql.com/doc/refman/5.0/en/join.html. There's also a couple restrictions for ordering and limiting on multiple table updates you can read about here: http://dev.mysql.com/doc/refman/5.0/en/update.html (just ctrl+f "join").
...
Convert Django Model object to dict with all of the fields intact
....base.ModelState at 0x7f5c6733bad0>,
'aggregator_id': 24,
'amount': 5.0,
'biller_id': 23,
'datetime': datetime.datetime(2018, 1, 31, 18, 43, 58, 933277, tzinfo=<UTC>),
'file_data_id': 797719,
}
You can add this also
>>> keys = obj_attrs.keys()
>>> temp = [obj...
Async/await vs BackgroundWorker
...obsolete in .NET 4.5:
in the book By Joseph Albahari, Ben Albahari "C# 5.0 in a Nutshell: The Definitive Reference"
Stephen Cleary's answer to my question "Wasn't it .NET 4.0 TPL that made APM, EAP and BackgroundWorker asynchronous patterns obsolete?"
MSDN article "Asynchronous Programmin...
How to change fontFamily of TextView in Android
...
From android 4.1 / 4.2 / 5.0, the following Roboto font families are available:
android:fontFamily="sans-serif" // roboto regular
android:fontFamily="sans-serif-light" // roboto light
android:fontFamily="sans-serif-condensed" // roboto...
Adding the “Clear” Button to an iPhone UITextField
...
myUITextField.clearButtonMode = UITextFieldViewModeWhileEditing;
Swift 5.0
myUITextField.clearButtonMode = .whileEditing
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