大约有 47,000 项符合查询结果(耗时:0.0605秒) [XML]

https://stackoverflow.com/ques... 

what is the difference between 'transform' and 'fit_transform' in sklearn

... already called its .fit method. In [12]: pc2 = RandomizedPCA(n_components=3) In [13]: pc2.transform(X) # can't transform because it does not know how to do it. --------------------------------------------------------------------------- AttributeError Traceback (most rece...
https://stackoverflow.com/ques... 

How do I declare a 2d array in C++ using new?

...| edited Feb 15 '18 at 22:33 AAEM 1,59111 gold badge1212 silver badges2424 bronze badges answered Jun 1 ...
https://stackoverflow.com/ques... 

Storing sex (gender) in database

... 255 (zero to 255) INT 4 - 2,147,483,648 to 2,147,483,647 BIT 1 (2 if 9+ columns) 2 (0 and 1) CHAR(1) 1 26 if case insensitive, 52 otherwise The BIT data type can be ruled out because it only supports two possible genders whic...
https://stackoverflow.com/ques... 

How can I force a hard reload in Chrome for Android

... | edited May 23 '17 at 12:26 Community♦ 111 silver badge answered Sep 3 '13 at 11:57 ...
https://stackoverflow.com/ques... 

How to log SQL statements in Grails

... 131 Setting datasource { ... logSql = true } in DataSource.groovy (as per these instructions) wa...
https://stackoverflow.com/ques... 

Get fully qualified class name of an object in Python

...as, the module name is explicitly excluded from __qualname__ # in Python 3. module = o.__class__.__module__ if module is None or module == str.__class__.__module__: return o.__class__.__name__ # Avoid reporting __builtin__ else: return module + '.' + o.__class__.__name__ bar = foo...
https://stackoverflow.com/ques... 

What does $.when.apply($, someArray) do?

... answered Feb 8 '13 at 16:34 Rocket HazmatRocket Hazmat 195k3838 gold badges273273 silver badges318318 bronze badges ...
https://stackoverflow.com/ques... 

Rspec doesn't see my model Class. uninitialized constant error

... answered Jul 7 '13 at 1:53 gmacdougallgmacdougall 4,77111 gold badge1313 silver badges2121 bronze badges ...
https://stackoverflow.com/ques... 

Overlaying histograms with ggplot2 in R

I am new to R and am trying to plot 3 histograms onto the same graph. Everything worked fine, but my problem is that you don't see where 2 histograms overlap - they look rather cut off. ...
https://stackoverflow.com/ques... 

How do I do a Date comparison in Javascript? [duplicate]

... answered Dec 3 '08 at 19:49 matt bmatt b 130k6262 gold badges265265 silver badges330330 bronze badges ...