大约有 30,000 项符合查询结果（耗时：0.0439秒） [XML]
Is volatile expensive?
...zed block. Entering a synchronized block requires an atomic compareAndSet based write to take out the lock and a volatile write to release it. If the lock is contented then control has to pass from user space to kernel space to arbitrate the lock (this is the expensive bit). Accessing a volatile ...
Installing multiple instances of the same windows service on a server
...service running on the same server and configured to point at separate databases.
10 Answers
...
How to pre-populate the sms body text via an html link
.../* phone number here */;body=/* body text here */">Link</a>
Live demo here: http://bradorego.com/test/sms.html (note the "Phone and ?body" and "Phone and ;body" should autofill both the to: field and the body text. View the source for more info)
UPDATE:
Apparently iOS8 had to go and chan...
Python class inherits object
... two styles of classes depending on the presence or absence of object as a base-class:
"classic" style classes: they don't have object as a base class:
>>> class ClassicSpam: # no base class
... pass
>>> ClassicSpam.__bases__
()
"new" style classes: they have, directly...
How to display length of filtered ng-repeat data
...ems = (items | filter:search) | limitTo:25)">...</div>
here's a demo fiddle
Using jQuery to center a DIV on the screen
..."px");
return this;
}
Now we can just write:
$(element).center();
Demo: Fiddle (with added parameter)
share
|
improve this answer
|
follow
|
...
Abort Ajax requests using jQuery
...er but only the last
// one will trigger "Process the response" message
Demo on jsFiddle
share
|
improve this answer
|
follow
|
...
memcpy() vs memmove()
...
Your demo didn't expose memcpy drawbacks because of "bad" compiler, it does you a favor in Debug version. A release version, however, gives you the same output, but because of optimization.
memcpy(str1 + 2, str1, 4);
00241013...
keytool error Keystore was tampered with, or password was incorrect
...ease make sure its for default debug.keystore file , not for your project based keystore file (Password might change for this).
Works well for MacOS Sierra 10.10+ too.
I heard, it works for linux environment as well. i haven't tested that in linux yet.
...
Redeploy alternatives to JRebel [closed]
...s recent versions of Java 7 and 8. The maintainer provides binaries for 32/64 bits VMs on Windows/Linux. Starting with Java 11 the project moved to a new GitHub repository and now also provides binaries for OS X.
DCEVM is packaged for Debian and Ubuntu, it's conveniently integrated with OpenJDK and...