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Arduino 101 实验09 - PWM 电机调速 · App Inventor 2 中文网
... function HideORDispFeedback() { $("#feedback").toggle();}function makeTitleDraggable(element, titleElement) { let isDragging = false; let offsetX, offsetY; // 只在标题栏上按下时开始拖动 titleElement.onmousedown = function(e) { isDragging = true; offset...
Escaping a forward slash in a regular expression
...example? I have this: perl -pi -e "s/chdir .*/chdir $ROBOT_PATH/g" startup_scripts/supervisord.conf And I'm getting conflicts with forward slashes.
– CMCDragonkai
Nov 8 '13 at 23:37
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编程基础与事件状态 06：把任务与记录保存下来 · App Inventor 2 中文网
... function HideORDispFeedback() { $("#feedback").toggle();}function makeTitleDraggable(element, titleElement) { let isDragging = false; let offsetX, offsetY; // 只在标题栏上按下时开始拖动 titleElement.onmousedown = function(e) { isDragging = true; offset...
How to make a SPA SEO crawlable?
...g some data to be displayed in part of the page and change the URL via javascript (e.g. using HTML5 pushstate or with Durandaljs). So, we have both an href attribute for google as well as on onclick which does the job when the user clicks on the link. Now, since I use push-state I don't want any # ...
Create Django model or update if exists
...
Thought I'd add an answer since your question title looks like it is asking how to create or update, rather than get or create as described in the question body.
If you did want to create or update an object, the .save() method already has this behaviour by default, from...
Rails 4: List of available datatypes
...ese data types are used for:
:string - is for small data types such as a title. (Should you choose string or text?)
:text - is for longer pieces of textual data, such as a paragraph of information
:binary - is for storing data such as images, audio, or movies.
:boolean - is for storing true or fal...
游戏中的算法与计算思维 02：用列表生成成对卡片 · App Inventor 2 中文网
... function HideORDispFeedback() { $("#feedback").toggle();}function makeTitleDraggable(element, titleElement) { let isDragging = false; let offsetX, offsetY; // 只在标题栏上按下时开始拖动 titleElement.onmousedown = function(e) { isDragging = true; offset...
Is AngularJS just for single-page applications (SPAs)?
...first with Angular as well. Then one day it dawned on me: "It is STILL javascript". There are a bunch of examples on the ins-and-outs of Angular (one of my favorites along with the book https://github.com/angular-app/angular-app). The biggest thing to remember is to load in the js files just like yo...
Pretty printing XML in Python
...0" ?>
<issues>
<issue>
<id>1</id>
<title>Add Visual Studio 2005 and 2008 solution files</title>
<details>We need Visual Studio 2005/2008 project files for Windows.</details>
</issue>
</issues>
Instead of this:
<?xml...
How to remove a field from params[:something]
...hod"=>"patch", "authenticity_token"=>"VtY...", "brochure"=> {"title"=>"Hello world", "profilings_attributes"=> {"-1"=>{"member_profile_id"=>"3"}, "0"=>{"percentage"=>"10.0", "description"=>"Some description!", "_destroy"=>"false", "id"=>"10"}, ...