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How do I return multiple values from a function? [closed]
... improved the speed of creating new namedtuple classes; the CPU costs drop by roughly a factor of 4x, but they're still roughly 1000x higher than the cost to create an instance, and the memory cost for each class remains high (I was wrong in my last comment about "under 1 KB" for the class, _source ...
Installing SciPy with pip
...alenvwrapper. My usual pattern is sudo apt-get install python-pip followed by sudo pip install virtualenvwrapper. After that everything goes into a virtualenv.
– DanielSank
Oct 13 '15 at 21:13
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jQuery SVG, why can't I addClass?
...d if you don't want to depend on jQuery:
var element = document.getElementById("item");
// Instead of .addClass("newclass")
element.setAttribute("class", "oldclass newclass");
// Instead of .removeClass("newclass")
element.setAttribute("class", "oldclass");
...
InputStream from a URL
...on.connect();
int responseCode = con.getResponseCode();
/* By default the connection will follow redirects. The following
* block is only entered if the implementation of HttpURLConnection
* does not perform the redirect. The exact behavior depends to
* th...
differences in application/json and application/x-www-form-urlencoded
...a long query string.The query string contains name-
value pairs separated by & character
e.g. field1=value1&field2=value2
It can be simple request called simple - don't trigger a preflight check
Simple request must have some properties. You can look here for more info. One of
them is th...
How to access the content of an iframe with jQuery?
...ansfer information between main page and iframe. Basically its been denied by browser because of Cross Browser functionality. I am sorry, I am not aware of any such library because I never required it.
– iMatoria
May 20 '17 at 8:35
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How to create custom easing function with Core Animation?
...I'd like to use a more interesting easing function than the few provided by Apple (EaseIn/EaseOut etc). For instance, a bounce or elastic function.
...
Excel “External table is not in the expected format.”
...
Just add my case. My xls file was created by a data export function from a website, the file extention is xls, it can be normally opened by MS Excel 2003. But both Microsoft.Jet.OLEDB.4.0 and Microsoft.ACE.OLEDB.12.0 got an "External table is not in the expected form...
MQTT物联网协议完全实践指南 · App Inventor 2 中文网
...践
主题命名规范：
{namespace}/{device_type}/{device_id}/{attribute}/{action}
示例：
home/thermostat/livingroom/temperature/set
office/light/meeting_room/brightness/get
factory/sensor/machine_001/status/online
通配符使用规则：
// 单级通配符匹配
call UrsPahoM...
XML schema or DTD for logback.xml?
...oint icon after you fix it, you might need to trigger the validation again by right-clicking the file and choosing Validate.
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