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Set type for function parameters?
...a+b;
});
// call the function, with an invalid second argument
myFunc(123, '456')
// ERROR! Uncaught Error: TypeError : Expecting a Number in argument 2
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Get statistics for each group (such as count, mean, etc) using pandas GroupBy?
...three 1.0 2.24 NaN 2.24 2.24 2.24 2.24 2.24
two 1.0 -0.98 NaN -0.98 -0.98 -0.98 -0.98 -0.98
foo one 2.0 1.36 0.58 0.95 1.15 1.36 1.56 1.76
three 1.0 -0.15 NaN -0.15 -0.15 -0.15 -0.15 -0.15
two 2.0 1.42 0.63 0.98 1.20 1.42 1.65 1.87
To get s...
The Definitive C++ Book Guide and List
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123
I hate to step on anybody's shoes, but I do not recommend Bruce Eckel's "Thinking in C++" even though I respect the author for publishing ...
URL query parameters to dict python
...t;> url = "http://www.example.org/default.html?ct=32&op=92&item=98"
>>> parse.urlsplit(url)
SplitResult(scheme='http', netloc='www.example.org', path='/default.html', query='ct=32&op=92&item=98', fragment='')
>>> parse.parse_qs(parse.urlsplit(url).query)
{'item':...
How to show particular image as thumbnail while implementing share on Facebook?
...ully changed, but image is still not coming.
– Gaurav123
Feb 20 '14 at 10:01
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OfflineSpeech 拓展：离线语音识别 · App Inventor 2 中文网
...盖绝大多数真实安卓手机）。
.aix 拓展下载：
cn.fun123.OfflineSpeech.aix
快速上手：3 分钟做一个实时字幕器（案例①）
成果：点「开始说话」对着手机讲话，屏幕上实时滚出文字；点「停止」结束。全程不...
NoSql vs Relational database
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Not all data is relational. For those situations, NoSQL can be helpful.
With that said, NoSQ...
How do I search for an object by its ObjectId in the mongo console?
... // no criteria
{ "_id" : ObjectId("4ecc05e55dd98a436ddcc47c"), "x" : 1 }
> db.test.find({"_id" : ObjectId("4ecc05e55dd98a436ddcc47c")}) // explicit
{ "_id" : ObjectId("4ecc05e55dd98a436ddcc47c"), "x" : 1 }
> db.test.find(ObjectId("4ecc05e55dd98a436ddcc47c")...
Get Folder Size from Windows Command Line
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123
You can just add up sizes recursively (the following is a batch file):
@echo off
set size=0
fo...
Getting visitors country from their IP
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Actually, you can call http://api.hostip.info/?ip=123.125.114.144 to get the information, which is presented in XML.
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