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App Inventor 2 中的响应式设计 · App Inventor 2 中文网
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App Inventor 2 中的响应式设计
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Responsive Design in App Inventor
version 1.0: August 15, 2015
Responsive Design in App Inventor
Specifying sizes as percentages
...
PHP best way to MD5 multi-dimensional array?
...d integers use:
md5(json_encode($array));
4 built-in PHP functions can transform array to string:
serialize(), json_encode(), var_export(), print_r().
Notice: json_encode() function slows down while processing associative arrays with strings as values. In this case consider to use serialize(...
how to set “camera position” for 3d plots using python/matplotlib?
...otlib interactively. But how can I do this from a script?
I found a lot of transforms in mpl_toolkits.mplot3d.proj3d but I could not find out how to use these for my purpose and I didn't find any example for what I'm trying to do.
...
App Inventor 2 CustomWebView 拓展：高级版Web浏览器，完美浏览现代Web前...
... 组件无法正常浏览部分现代Web页面，无法浏览带端口url的页面，这款拓展统统解决。
.aix 拓展下载：
cn.fun123.CustomWebView.aix
基础使用方法：
例如，使用此拓展访问 react 写的网页，效果如下：
而使用原生的Web浏览器则...
What are the pros and cons to keeping SQL in Stored Procs versus Code [closed]
...l too.
I can profile my data query/ persistence code separate from my data transformation code.
I can implement changeable conditions in my stored procedure and it would be easy to customize at a customer site.
It becomes easier to use some automated tools to convert my schema and statements togeth...
Android list view inside a scroll view
...tViewHeightBasedOnChildren(ListView listView) {
// 获取ListView对应的Adapter
ListAdapter listAdapter = listView.getAdapter();
if (listAdapter == null) {
return;
}
int totalHeight = 0;
for (int i = 0, len = listAdapter.getCount(); i < len; i++) { // listAdapte...
How to style the option of an html “select” element?
...ant;
color: #fff !important;
background: #bc0000 !important;
text-transform: uppercase;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></...
Control the dashed border stroke length and distance between strokes
...d be very tricky with having to find points on a circle (and possibly even transform).
.dashed-box-shadow{
position: relative;
height: 120px;
width: 120px;
padding: 10px;
}
.dashed-box-shadow:before{ /* for border top and bottom */
position: absolute;
content: '';
top: 0...
foldl versus foldr behavior with infinite lists
...evaluating it.
So the two important points to note are these:
foldr can transform one lazy recursive data structure into another.
Otherwise, lazy folds will crash with a stack overflow on large or infinite lists.
You may have noticed that it sounds like foldr can do everything foldl can, plus m...
REST API Best practice: How to accept list of parameter values as input [closed]
...%2C%22Bags%22%5D%2C%22color%22%3A%5B%22Black%22%2C%22Red%22%5D%7D
Can be transformed to...
/Product?term=pumas&productType[]=Clothing&productType[]=Bags&color[]=Black&color[]=Red
Aside from avoiding the requirement of URL encoding and making things look a bit more standard, it n...