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Multiple linear regression in Python
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@HuanianZhang what do you mean by confidence level? If you want the coefficient of determination, the score method will do it; sklearn.metrics has some other model evaluation criteria. If you want the stuff like in Akavall's answer, statsmodels has some more R-like diagnostics...
How to search a string in multiple files and return the names of files in Powershell?
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What if you want to also MOVE those files?... I'm getting an error with this where I can't join a | Move-Item to the end of that.
– rud3y
Sep 5 '12 at 12:57
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error LNK2019: 无法解析的外部符号 __imp__PlaySoundW@12，该符号在函数 \...
error LNK2019: 无法解析的外部符号 __imp__PlaySoundW@12，该符号在函数 "long __stdcall WndProc(struct HWND__ *,unsigned int,unsigned int,long)" (?WndProc@@YGJPAUHWND__@@IIJ@Z) 中被引用#include <mmsystem.h>#pragma comment(lib, "WINMM.LIB")
#include <mmsystem.h>
#pragma comm...
Constants in Objective-C
...ySecondConstant;
//etc.
(you can use extern instead of FOUNDATION_EXPORT if your code will not be used in mixed C/C++ environments or on other platforms)
You can include this file in each file that uses the constants or in the pre-compiled header for the project.
You define these constants in a...
When to use enumerateObjectsUsingBlock vs. for
Besides the obvious differences:
6 Answers
6
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Sending a message to nil in Objective-C
...ize(); ++i){
System.out.println(list.get(i).toString());
}
}
Now, if you call that method like so: someObject.foo(NULL); you're going to probably get a NullPointerException when it tries to access list, in this case in the call to list.size(); Now, you'd probably never call someObject....
Quickest way to convert a base 10 number to any base in .NET?
... used to convert a number to its equivalent string representation in a specified base.
Example:
string binary = Convert.ToString(5, 2); // convert 5 to its binary representation
Console.WriteLine(binary); // prints 101
However, as pointed out by the comments, Convert.ToString only s...
Get a random boolean in python?
...ite fast, but I found that random.getrandbits(1) to be quite a lot faster. If you really want a boolean instead of a long then
bool(random.getrandbits(1))
is still about twice as fast as random.choice([True, False])
Both solutions need to import random
If utmost speed isn't to priority then ran...
What is the difference between tree depth and height?
... the next, and I'm posting this so everyone is aware that this discrepancy now exists and hopefully won't cause bugs in any programs! Thanks.
From the OpenDSA Data Structures & Algos book:
If n1, n2,...,nk is a sequence of nodes in the tree such
that ni is the parent of ni+1 for 1<=i...
Retargeting solution from .Net 4.0 to 4.5 - how to retarget the NuGet packages?
...ed a solution that is currently targeting .NET 4.0 in VS2010 to VS2012 and now I would like to re-target it to .Net 4.5
5 A...