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Where can I get a list of Ansible pre-defined variables?
...es (AKA 'magic' variables). They are documented in Ansible documentation: http://docs.ansible.com/playbooks_variables.html#magic-variables-and-how-to-access-information-about-other-hosts
Here is the list extracted from Ansible 1.9 documentation:
group_names
groups
inventory_hostname
ansible_host...
How the single threaded non blocking IO model works in Node.js
...erspective, let me compare node.js with apache.
Apache is a multi-threaded HTTP server, for each and every request that the server receives, it creates a separate thread which handles that request.
Node.js on the other hand is event driven, handling all requests asynchronously from single thread.
Wh...
项目管理实践教程二、源代码控制【Source Control Using VisualSVN Server ...
...修改配置文件来控制用户权限，另外如果要想以Web方式【http协议】访问，一般还要安装配置Apache，如果是新手，岂不是很头痛？而VisualSVN Serve集成了Subversion和Apache，省去了以上所有的麻烦。安装的时候SVN Server已经封装为windws se...
How to design a product table for many kinds of product where each product has many parameters
...eUploader: {
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How to get mouse position in jQuery without mouse-events?
...eUploader: {
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Reloading module giving NameError: name 'reload' is not defined
...eUploader: {
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Resize a large bitmap file to scaled output file on Android
...the photo taking tool.
See the section entitled "Decode a Scaled Image".
http://developer.android.com/training/camera/photobasics.html
The solution it proposes is a resize then scale solution like the others here, but it's quite neat.
I've copied the code below as a ready-to-go function for conv...
Reliable way for a Bash script to get the full path to itself [duplicate]
...ry to run this script from a PIPE it will not work
wget -o /dev/null -O - http://host.domain/dir/script.sh |bash
Technically speaking, it is undefined. Practically speaking, there is no sane way to detect this. (A co-process can not access the environment of the parent.)
...
What is the difference between memoization and dynamic programming?
... the results
of subproblems to avoid computing the same results again.
http://www.geeksforgeeks.org/dynamic-programming-set-1/
Memoization is an easy method to track previously solved solutions (often implemented as a hash key value pair, as opposed to tabulation which is often based on arrays)...
PHP multidimensional array search by value
...rray_search('100', array_column($userdb, 'uid'));
Here is documentation: http://php.net/manual/en/function.array-column.php.
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