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...概有这些,a)被调用方的结果返回,会涉及进程线程间通信的问题。b)如果程序需要回滚,回滚会有点复杂。c)异步通常都会伴随多线程多进程,并发的控制也相对麻烦一些。d)很多异步系统都用消息机制,消息的丢失和乱...
Why does Hibernate require no argument constructor?
...ased mapping - maybe what you would like ? - because of some issues like
1º What happens whether your class contains a lot of constructors
public class Person {
private String name;
private Integer age;
public Person(String name, Integer age) { ... }
public Person(String name) {...
Improving bulk insert performance in Entity framework [duplicate]
... answered Nov 6 '13 at 12:21
Måns TånnerydMåns Tånneryd
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How many files can I put in a directory?
...ld answer, I know… but when you write EXT4 – Maximum number of files: 2³² - 1 (4,294,967,295) and Maximum number of files per directory: unlimited you really confused me because 2³² - 1 != “unlimited”. I guess I need a coffee now. ;) Nevertheless +1
– e-sushi
...
Difference between single and double square brackets in Bash
...d1 && cmd2
[ a = a -a b = b ]: equivalent, but deprecated by POSIX³
[ a = a ] && [ b = b ]: POSIX and reliable equivalent
(
[[ (a = a || a = b) && a = b ]]: false
[ ( a = a ) ]: syntax error, () is interpreted as a subshell
[ \( a = a -o a = b \) -a a = b ]: equivalent, ...
DateTime.ToString(“MM/dd/yyyy HH:mm:ss.fff”) resulted in something like “09/14/2013 07.20.31.371”
... answered Sep 2 '15 at 8:06
Håkon SeljåsenHåkon Seljåsen
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In C# check that filename is *possibly* valid (not that it exists) [duplicate]
... edited Apr 30 '17 at 0:51
buræquete
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answered Jan 7 '09 at 21:11
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Difference between InvariantCulture and Ordinal string comparison
...iosyncrasies out there.
Ordinal 0 9 A Ab a aB aa ab ss Ä Äb ß ä äb ぁ あ ァ ア 亜 A
IgnoreCase 0 9 a A aa ab Ab aB ss ä Ä äb Äb ß ぁ あ ァ ア 亜 A
--------------------------------------------------------------------
InvariantCulture 0 9 a A A ä Ä aa ab aB ...
What's the difference between UTF-8 and UTF-8 without BOM?
...nded but it did wonders to my powershell script when trying to output "æøå"
– Marius
Nov 12 '13 at 9:22
63
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Is there a way to make R beep/play a sound at the end of a script?
...ered Jul 1 '14 at 18:08
Rasmus BååthRasmus Bååth
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