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MediaHelper 媒体助手扩展：从媒体文件提取元数据和专辑封面 · App Inventor 2 中文网
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1.0
2021-07-06
初始版本
1.1
2024-09-04
Android 14 适配
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应用截图
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数据源类型
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What is a “callable”?
...t call it and catch TypeError later. callable is removed in Python 3.0 and 3.1, use callable = lambda o: hasattr(o, '__call__') or isinstance(o, collections.Callable).
Example, a simplistic cache implementation:
class Cached:
def __init__(self, function):
self.function = function
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Python + Django page redirect
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Since Django 1.1, you can also use the simpler redirect shortcut:
from django.shortcuts import redirect
def myview(request):
return redirect('/path')
It also takes an optional permanent=True keyword argument.
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Spring MVC @PathVariable getting truncated
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For Spring 3.1 users - if you're using the new RequestMappingHandlerMapping instead, the property to set is useSuffixPatternMatch (also to false). @Ted: the linked issue mentions that in 3.2 they hope to add a bit more control so it doe...
Getting a map() to return a list in Python 3.x
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@hughdbrown The argument for using 3.1's map would be lazy evaluation when iterating on a complex function, large data sets, or streams.
– Andrew Keeton
Aug 20 '09 at 0:45
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HTML list-style-type dash
...re {
content: "–"; /* en dash */
position: absolute;
margin-left: -1.1em;
}
demo fiddle
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Intro to GPU programming [closed]
...orth it for some applications.
It's still in its relatively early stages (1.1 as of this answer), but has gained some traction in the industry - for instance it is natively supported on OS X 10.5 and above.
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Fluid or fixed grid system, in responsive design, based on Twitter Bootstrap
...des of one's Web page content.
container-fluid is added back in Bootstrap 3.1
A fluid grid layout uses all screen width and works better in large screen. It turns out that it is easy to create a fluid grid layout using Bootstrap 3 mixins. The following line makes a fluid responsive grid layout:
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Convert JSON to Map
...d>
<artifactId>jettison</artifactId>
<version>1.1</version>
</dependency>
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HTML5 Local Storage fallback solutions [closed]
...ll get native client-side storage support in IE 5.5+, Firefox 2.0+, Safari 3.1+, and Chrome; and plugin-assisted support if the browser has Flash or Gears. If you enable cookies, it will work in everything (but will be limited to 4 kB).
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