大约有 40,000 项符合查询结果（耗时：0.0790秒） [XML]
Installing older version of R package
...t and devtools
install.versions(c('checkpoint', 'devtools'), c('0.3.3', '1.6.1'))
That has the advantage of not requiring Rtools to install binary packages on Windows, but only works going back to 2014-09-17 (when MRAN was launched).
To install an older version from the command line (outside of R...
Why can't I use a list as a dict key in python?
...
36
There's a good article on the topic in the Python wiki: Why Lists Can't Be Dictionary Keys. As e...
How can I strip all punctuation from a string in JavaScript using regex?
... |
edited Jan 15 '16 at 14:42
answered Dec 1 '10 at 20:23
...
What is the purpose of std::make_pair vs the constructor of std::pair?
...
Tor ValamoTor Valamo
29.5k1010 gold badges6868 silver badges7979 bronze badges
1
...
How do I get indices of N maximum values in a NumPy array?
...
16 Answers
16
Active
...
SQL Server Escape an Underscore
...
Lasse V. KarlsenLasse V. Karlsen
336k9191 gold badges560560 silver badges760760 bronze badges
...
git ignore vim temporary files
...
396
Vim temporary files end with ~ so you can add to the file .gitignore the line
*~
Vim also cre...
Convert list to dictionary using linq and not worrying about duplicates
...
CarraCarra
16k55 gold badges5757 silver badges7373 bronze badges
...
Separation of business logic and data access in django
...
655
+100
It see...
Meaning of @classmethod and @staticmethod for beginner? [duplicate]
...
2627
Though classmethod and staticmethod are quite similar, there's a slight difference in usage fo...