大约有 47,000 项符合查询结果（耗时：0.0597秒） [XML]
What does T&& (double ampersand) mean in C++11?
...bs Jul 13 '14 at 16:12
The biggest difference between a C++03 reference (now called an lvalue reference in C++11) is that it can bind to an rvalue like a temporary without having to be const. Thus, this syntax is now legal:
T&& r = T();
rvalue references primarily provide for the follo...
Add Keypair to existing EC2 instance
...file system (still on instance-B):
sudo umount /vol-a
sudo rmdir /vol-a
Now, back on your system with ec2-api-tools, continue moving the EBS volume back to it’s home on the original instance A and start the instance again:
ec2-detach-volume $volume
ec2-attach-volume --instance $instance_a --de...
Swift compiler error: “non-modular header inside framework module”
Now I would like to migrate my ObjC framework to Swift and I got the following error:
20 Answers
...
Can I embed a custom font in an iPhone application?
...:
Custom Font Support
Applications that want to use custom fonts can now include those fonts in their application bundle and register those fonts with the system by including the UIAppFonts key in their Info.plist file. The value of this key is an array of strings identifying the font files in...
Difference between timestamps with/without time zone in PostgreSQL
...ly in the docs. The difference arises from what the system can reasonably know about the value:
With a time zone as part of the value, the value can be rendered as a local time in the client.
Without a time zone as part of the value, the obvious default time zone is UTC, so it is rendered for that...
Is it smart to replace boost::thread and boost::mutex with c++11 equivalents?
...1 timeouts are different to Boost timeouts (though this should soon change now Boost.Chrono has been accepted).
Some of the names are different (e.g. boost::unique_future vs std::future)
The argument-passing semantics of std::thread are different to boost::thread --- Boost uses boost::bind, which re...
bodyParser is deprecated express 4
...structor has been deprecated, as of 2014-06-19.
app.use(bodyParser()); //Now deprecated
You now need to call the methods separately
app.use(bodyParser.urlencoded());
app.use(bodyParser.json());
And so on.
If you're still getting a warning with urlencoded you need to use
app.use(bodyParser....
Email validation using jQuery
...n this regex may need modifying .systems and .poker etc are all valid TLDs now but would fail the regex check
– Liath
Sep 5 '14 at 7:35
3
...
What's the difference between passing by reference vs. passing by value?
...by value vs. pass by reference" distinction as defined in the CS theory is now obsolete because the technique originally defined as "pass by reference" has since fallen out of favor and is seldom used now.1
Newer languages2 tend to use a different (but similar) pair of techniques to achieve the sam...
How to use android emulator for testing bluetooth application?
... adapter to 'Bridged'. ·
Start the VM and select 'Live CD VESA' at boot.
Now you need to find out the IP of this VM. Go to terminal in VM (use Alt+F1
& Alt+F7 to toggle) and use the netcfg command to find this.
Now you need open a command prompt and go to your android install
folder (on host)...