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Is there a short cut for going back to the beginning of a file by vi editor?
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edited Mar 13 at 12:39
ROOT
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answered Jul 29 '14 at 9:53
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What's the difference between an inverted index and a plain old index?
... of procedures which have been done in order to speed up application (e.g. MySQL or other RDBMS Consult MySQL the docs). Indexing can also be related to caching etc.
Inverted index creates file with structure that is primarily intender for (fulltext) searching.
Inverted index consists of two main...
OS X Terminal Colors [closed]
...oloring = \[\e[0m\]
I always add a slightly modified color-scheme in the root's .bash_profile to make the username red, so I always see clearly if I'm logged in as root (handy to avoid mistakes if I have many terminal windows open).
In /root/.bash_profile:
PS1='\[\e[0;31m\]\u\[\e[0m\]@\[\e[0;32m...
Redirecting to a relative URL in JavaScript
... I found using window.location.href = '../' redirected to the root of the site and not "one level up" as expected. When the current page is "www.example.com/customers/list" I needed to use './'. I guess this is because "list" is not considered as a directory level.
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How to find a deleted file in the project commit history?
...ension, for that matter):
Prelim.: Avoid confusion by stepping to the git root
A nontrivial project may have multiple directories with similar or identical names.
> cd <project-root>
Find the full path
git log --diff-filter=D --summary | grep delete | grep MyFile
delete mode 100...
What is Virtual DOM?
...des in the Virtual DOM.
ReactElements can be rendered into HTML DOM
var root = React.createElement('div');
ReactDOM.render(root, document.getElementById('example'));
JSX compiles HTML tags into ReactElements
var root = <div/>;
ReactDOM.render(root, document.getElementById('example'));
R...
CMake not able to find OpenSSL library
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fixed it on macOS using
brew install openssl
cmake -DOPENSSL_ROOT_DIR=/usr/local/opt/openssl -DOPENSSL_LIBRARIES=/usr/local/opt/openssl/lib
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How can building a heap be O(n) time complexity?
...n. In particular, this implies that the largest item in the heap is at the root. Sifting down and sifting up are essentially the same operation in opposite directions: move an offending node until it satisfies the heap property:
siftDown swaps a node that is too small with its largest child (thereb...
国务院常务会议“大数据” - 资讯 - 清泛网 - 专注C/C++及内核技术
...，“设立保险投资基金”，从这些会议关键词可以看出，如何有效发挥财政和金融的作用成为当前中国经济的调控关键。
近几年国务院常务会议讨论和出台的关于财政和金融方面的政策措施越来越多，财政金融手段使用比过去...
Is there a way to get a collection of all the Models in your Rails app?
...ntent of the models directory of your application...
Dir.foreach("#{RAILS_ROOT}/app/models") do |model_path|
# ...
end
EDIT: Another (wild) idea would be to use Ruby reflection to search for every classes that extends ActiveRecord::Base. Don't know how you can list all the classes though...
ED...