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Is there a query language for JSON?
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Talking about standard, I heard a rumor that XQuery 3.1 might be extended to support JSON queries (similar to JSONiq). Of course, it could take some time since XQuery 3.0 is not officially released yet.
– Julien Ribon
Dec 14 '12 at 10:14
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Callback functions in C++
...y passing appropriate callables for example:
std::vector<double> v{ 1.0, 2.2, 4.0, 5.5, 7.2 };
double r = 4.0;
std::for_each(v.begin(), v.end(), [&](double & v) { v += r; });
std::for_each(v.begin(), v.end(), [](double v) { std::cout << v << " "; });
which prints
5 6.2 ...
Has anyone used Coffeescript for a production application? [closed]
...1.
The language has actually changed very little in the six months between 1.0 and 1.1.1; nearly all of the changes qualify as "bugfixes." I had to make very few tweaks to the code in the book for the transition from 1.0.1 to 1.1.1. However, I'm sure the language will see more significant changes in...
How can I find an element by CSS class with XPath?
...oken(@class, 'Test')]
It's only supported in the latest version of XPath (3.1) so you'll need an up-to-date implementation.
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Create a “with” block on several context managers? [duplicate]
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In Python 2.7 and 3.1 and above, you can write:
with A() as X, B() as Y, C() as Z:
do_something()
This is normally the best method to use, but if you have an unknown-length list of context managers you'll need one of the below methods.
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Remove ActiveRecord in Rails 3
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In rails 3.1 you also need to have require "sprockets/railtie" in your application.rb file.
– erskingardner
Aug 15 '11 at 14:41
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Placeholder in UITextView
...self];
self.placeholderTextColor = [UIColor colorWithWhite:0.702f alpha:1.0f];
}
- (void)textChanged:(NSNotification *)notification {
[self setNeedsDisplay];
}
@end
It's a lot simpler than the others, as it doesn't use subviews (or have leaks). Feel free to use it.
Update 11/10/11: It is ...
What to learn for making Java web applications in Java EE 6? [closed]
...l your needs (Servlet 3.0, JSF 2.0, JPA 2.0, EJB 3.1 lite, Bean Validation 1.0, CDI, etc), because these APIs are all more than decent, because there is nothing really wrong in learning them, because this is already a big task, because you have to start somewhere, I'd focus on Java EE 6 only and for...
Repeat each row of data.frame the number of times specified in a column
...lt:
var1 var2
1 a d
2 b e
2.1 b e
3 c f
3.1 c f
3.2 c f
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iPhone App 开发第一步：从零到真机调试HelloWorld - 更多技术 - 清泛网 - ...
...失效就自己找，刚才的链接帽子里有：
VMWare 8.0以及汉化包：http://3.xp510.com:801/xp2011/VMware_Workstation_wmb.zip
Mac OSX 系统Snow Leopard 10.6： [苹果雪豹操作系统正式版].snowleopard_10a432_userdvd.dmg，下载地址已经丢失，估计verycd或其...