大约有 46,000 项符合查询结果(耗时:0.0361秒) [XML]

https://stackoverflow.com/ques... 

How are feature_importances in RandomForestClassifier determined?

...data used on the tree? – Cokes Jan 20 '15 at 20:27 1 Two useful resources. (1) blog.datadive.net/...
https://stackoverflow.com/ques... 

Resizing an image in an HTML5 canvas

...lement them yourself then! Oh come on, we're entering the new age of Web 3.0, HTML5 compliant browsers, super optimized JIT javascript compilers, multi-core(†) machines, with tons of memory, what are you afraid of? Hey, there's the word java in javascript, so that should guarantee the performance,...
https://stackoverflow.com/ques... 

Array slicing in Ruby: explanation for illogical behaviour (taken from Rubykoans.com)

... 10 Answers 10 Active ...
https://stackoverflow.com/ques... 

How do I truncate a .NET string?

...lue; return value.Length <= maxLength ? value : value.Substring(0, maxLength); } } Now we can write: var someString = "..."; someString = someString.Truncate(2); share | improve ...
https://stackoverflow.com/ques... 

What ports does RabbitMQ use?

...| edited Sep 19 '14 at 18:00 Eric Leschinski 114k4949 gold badges368368 silver badges313313 bronze badges ...
https://stackoverflow.com/ques... 

Generate a random point within a circle (uniformly)

...andom point on BC. Ie. pick a pair of random numbers x and y uniformly on [0,R] giving distances from the center. Our triangle is a thin sliver so AB and BC are essentially parallel. So the point Z is simply a distance x+y from the origin. If x+y>R we fold back down. Here's the complete algorith...
https://stackoverflow.com/ques... 

Specifying rails version to use when creating a new application

I have two versions of rails (2.1.0 and 2.2.2) installed in my computer. 7 Answers 7 ...
https://stackoverflow.com/ques... 

Check substring exists in a string in C

... 280 if(strstr(sent, word) != NULL) { /* ... */ } Note that strstr returns a pointer to the sta...
https://stackoverflow.com/ques... 

How to check whether a pandas DataFrame is empty?

... 505 You can use the attribute df.empty to check whether it's empty or not: if df.empty: print(...
https://stackoverflow.com/ques... 

What is the difference between exit(0) and exit(1) in C?

Can anyone tell me? What is the difference between exit(0) and exit(1) in C language? 11 Answers ...