大约有 31,100 项符合查询结果（耗时：0.0591秒） [XML]
Which machine learning classifier to choose, in general? [closed]
...
My take on it is that you always run the basic classifiers first to get some sense of your data. More often than not (in my experience at least) they've been good enough.
So, if you have supervised data, train a Naive Bayes ...
How to cast/convert pointer to reference in C++
...ding an HTML comment <!-----------------------------> which I did in my first version ofthe answer! My edit to your answer shows how.
– David Heffernan
Apr 16 '12 at 12:04
...
vim and NERD Tree extension - adding a file
...e from within vim.
:e somefile.txt
One handy thing for this is that in my .vimrc I auto change the cwd to the directory my current file is in:
" Auto change the directory to the current file I'm working on
autocmd BufEnter * lcd %:p:h
This way if I'm editing a file and want another one in t...
Force browser to clear cache
Is there a way I can put some code on my page so when someone visits a site, it clears the browser cache, so they can view the changes?
...
NSDate get year/month/day
...
Because this is apparently my most popular answer, I'll try to edit it to contain a little bit more information.
Despite its name, NSDate in and of itself simply marks a point in machine time, not a date. There's no correlation between the point in ti...
Catching multiple exception types in one catch block
...d still be able to define a hierarchy to match your needs.
abstract class MyExceptions extends Exception {}
abstract class LetterError extends MyExceptions {}
class AError extends LetterError {}
class BError extends LetterError {}
Then:
catch(LetterError $e){
//voodoo
}
As you can see h...
Is there any reason for using WebGL instead of 2D Canvas for 2D games/apps?
...
Speaking from experience on my own applications, graphics shaders have been the one and only reason I've required support for WebGL. Ease of use has little bearing for me since both frameworks can be abstracted away with three.js. Assuming I don't need ...
How do you set a default value for a MySQL Datetime column?
How do you set a default value for a MySQL Datetime column?
25 Answers
25
...
Easy way to test a URL for 404 in PHP?
I'm teaching myself some basic scraping and I've found that sometimes the URL's that I feed into my code return 404, which gums up all the rest of my code.
...
Send file using POST from a Python script
... variant urlopen(theUrl, urlencode({'serverside_field_name': EnhancedFile('my_file.txt')})), it uploads a file but (of course!) with incorrect content as <open file 'my_file.txt', mode 'r' at 0x00D6B718>. Did I miss something?
– RayLuo
Mar 4 '13 at 15:3...