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How to rename a single column in a data.frame?
... answered May 10 '13 at 20:33
Side_0o_EffectSide_0o_Effect
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Is there a minlength validation attribute in HTML5?
...ise an input field with an empty value will be excluded from constraint validation.
<input pattern=".{3,}" required title="3 characters minimum">
<input pattern=".{5,10}" required title="5 to 10 characters">
If you want to create the option to use the pattern for "empty, or minimum ...
廉价共享存储解决方案2-drbd+cman+gfs2 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...lic/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa):
Your identification has been saved in /root/.ssh/id_rsa.
Your public key has been saved in /root/.ssh/id_rsa.pub.
The key fingerprint is:
a9:8a:3a:3d:64:eb:0b:de:94:a5:92:e4:ba:5d:f3:de root@gfs_1
The key's rand...
What is “lifting” in Haskell?
...ive
instance Applicative Foo where
pure x = Foo $ ... -- Wrap 'x' inside a Foo.
(<*>) = liftFoo2 ($)
The (<*>) operator for Foo has the type
(<*>) :: Foo (a -> b) -> Foo a -> Foo b
It applies the wrapped function to the wrapped value. So if you can implement ...
Android ImageView Zoom-in and Zoom-Out
I want to Zoom-in and Zoom-out an Android ImageView. I tried most of the samples but in all of them the image in the ImageView itself is getting Zoomed-in and Zoomed-out, while I want to Zoom-in and Zoom-out the ImageView. I want to increase the ImageView width and height while Zooming-in and reduce...
Android webview launches browser when calling loadurl
... WebViewClient());
For more advanced processing for the web content, consider the ChromeClient.
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boost多索引容器multi_index_container实战 - C/C++ - 清泛网 - 专注C/C++及内核技术
...自boost文档
template<typename Tag,typename MultiIndexContainer>
void print_out_by( const MultiIndexContainer& s )
{
/* obtain a reference to the index tagged by Tag */
const typename boost::multi_index::index<MultiIndexContainer,Tag>::type& i = get<Tag>(s);
t...
Android: TextView automatically truncate and replace last 3 char of String
If a String is longer than the TextView 's width it automatically wraps onto the next line. I can avoid this by using android:singleLine (deprecated) or by setting android:inputType="text" . What I need now is something that replaces the last 3 characters of my String with " ... ". Since I'm...
Python `if x is not None` or `if not x is None`?
... of the if not x is None version to be more clear, but Google's style guide and PEP-8 both use if x is not None . Is there any minor performance difference (I'm assuming not), and is there any case where one really doesn't fit (making the other a clear winner for my convention)?*
...
Twitter Bootstrap - Tabs - URL doesn't change
...volved, I think it's neatest as a small jQuery plugin: https://github.com/aidanlister/jquery-stickytabs
You can call the plugin like so:
$('.nav-tabs').stickyTabs();
I've made a blog post for this, http://aidanlister.com/2014/03/persisting-the-tab-state-in-bootstrap/
...