大约有 44,000 项符合查询结果（耗时：0.0318秒） [XML]
Difference between objectForKey and valueForKey?
...n do the following:
NSNumber *anAccountNumber = [NSNumber numberWithInt:12345];
Account *newAccount = [[Account alloc] init];
[newAccount setAccountNumber:anAccountNUmber];
NSNumber *anotherAccountNumber = [newAccount accountNumber];
Using KVC, I can access the property dynamically:
NSNumber *...
Copy constructor versus Clone()
...
Simon P StevensSimon P Stevens
25.7k33 gold badges7070 silver badges100100 bronze badges
...
Why is a combiner needed for reduce method that converts type in java 8
...
edited Jun 19 '14 at 15:03
answered Jun 19 '14 at 14:24
Er...
Java equivalent of unsigned long long?
...
answered Feb 3 '09 at 19:52
Sean BrightSean Bright
106k1717 gold badges128128 silver badges138138 bronze badges
...
Split string with delimiters in C
... |
edited Dec 20 '13 at 13:34
answered Feb 9 '12 at 12:09
...
What do the f and t commands do in Vim?
...th a number to move to the nth occurrence of that character. For example, 3fb would move to the third b to the right of the cursor. My example sentence only has one b though, so the cursor wouldn't move at all.
share
...
How to create circle with Bézier curves?
...in the sense that the middle of the curve lies on the circle itself, is (4/3)*tan(pi/(2n)).
So for 4 points it is (4/3)*tan(pi/8) = 4*(sqrt(2)-1)/3 = 0.552284749831.
share
|
improve this answe...
Entity Framework 5 Updating a Record
...ds of editing/updating a record within Entity Framework 5 in an ASP.NET MVC3 environment, but so far none of them tick all of the boxes I need. I'll explain why.
...
HashSet vs. List performance
...ts after size 20.
1 item LIST strs time: 617ms
1 item HASHSET strs time: 1332ms
2 item LIST strs time: 781ms
2 item HASHSET strs time: 1354ms
3 item LIST strs time: 950ms
3 item HASHSET strs time: 1405ms
4 item LIST strs time: 1126ms
4 item HASHSET strs time: 1441ms
5 item LIST strs time: 1370m...
Suppress warning CS1998: This async method lacks 'await'
...
Stephen ClearyStephen Cleary
350k6363 gold badges575575 silver badges700700 bronze badges
...