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What is __future__ in Python used for and how/when to use it, and how it works
...nce using an older version will throw a runtime exception.
References
https://docs.python.org/2/library/future.html
https://docs.python.org/3/library/future.html
https://docs.python.org/2.2/whatsnew/node9.html
https://www.python.org/dev/peps/pep-0255/
https://www.python.org/dev/peps/pep-0238/
h...
Postgresql aggregate array
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How can I resize an image dynamically with CSS as the browser width/height changes?
...spect ratios:
img {
width: 100%;
height: auto;
}
<img src="https://www.petmd.com/sites/default/files/petmd-cat-happy-10.jpg" alt="cat">
So far not really interesting, but what if we would like to change the cats width to be the maximum of 50% of the viewport?
img {
...
Hidden features of HTML
....com/img/logo.png"/>
If the browser is viewing an page in SSL through HTTPS, then it'll request that asset with the https protocol, otherwise it'll request it with HTTP.
This prevents that awful "This Page Contains Both Secure and Non-Secure Items" error message in IE, keeping all your asset r...
How to use Python to login to a webpage and retrieve cookies for later usage?
...o access it I need a couple of cookies set. Therefore I need to login over https to the webpage first. The login moment involves sending two POST params (username, password) to /login.php. During the login request I want to retrieve the cookies from the response header and store them so I can use th...
App Inventor 2 MQTT拓展入门（保姆级教程） · App Inventor 2 中文网
...
准备工作
APPINVENTOR测试平台：AppInventor2中文网（https://www.fun123.cn）
MQTT拓展下载：MQTT中文文档页面进行下载。
MQTT测试平台：
中文平台推荐：bemfa.com 界面简洁，对入门者友好。当然也可以选择...
How to style CSS role
...
Use CSS attribute selectors:
https://developer.mozilla.org/en-US/docs/CSS/Attribute_selectors
e.g.:
div[role=main]
share
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...
Getting current directory in .NET web application
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How do you use Mongoose without defining a schema?
...swer. Just wanted to add this in case someone comes across the same thing. https://mongoosejs.com/docs/guide.html#toJSON
– Chris
Apr 8 '19 at 15:18
...
What replaces cellpadding, cellspacing, valign, and align in HTML5 tables?
...eUploader: {
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