大约有 5,100 项符合查询结果(耗时:0.0226秒) [XML]

https://stackoverflow.com/ques... 

dropping infinite values from dataframes in pandas?

...estion: df = pd.DataFrame(np.ones((3, 3)), columns=list('ABC')) for i in range(3): df.iat[i, i] = np.inf df A B C 0 inf 1.000000 1.000000 1 1.000000 inf 1.000000 2 1.000000 1.000000 inf df.sum() A inf B inf C inf dtype: float64 df....
https://stackoverflow.com/ques... 

Count character occurrences in a string in C++

... #include <boost/range/algorithm/count.hpp> std::string str = "a_b_c"; int cnt = boost::count(str, '_'); share | improve this answer ...
https://stackoverflow.com/ques... 

maxlength ignored for input type=“number” in Chrome

... inon suggested in his/her answer (NB: this will only define a constrained range, not the actual character length of the value, though -9999 to 9999 will cover all 0-4 digit numbers), or you can use a regular text input and enforce validation on the field with the new pattern attribute: <input t...
https://stackoverflow.com/ques... 

Is there a limit on how much JSON can hold?

... on the maximum depth of nesting. An implementation may set limits on the range and precision of numbers. An implementation may set limits on the length and character contents of strings." share | ...
https://stackoverflow.com/ques... 

How can you strip non-ASCII characters from a string? (in C#)

... Range for printable characters is 0020-007E, for people looking for regular expression to replace non-printable characters – Mubashar Feb 17 '14 at 4:40 ...
https://stackoverflow.com/ques... 

How do I determine file encoding in OS X?

...as the file you are testing contains characters outside of the basic ASCII range. For instance if you go into Terminal and use vi to create a file eg. vi test.txt then insert some characters and include an accented character (try ALT-e followed by e) then save the file. They type file -I text.txt...
https://stackoverflow.com/ques... 

Set NOW() as Default Value for datetime datatype?

... @Johan DATETIME is often prefered to do the range it can hold: '1000-01-01 00:00:00' to '9999-12-31 23:59:59' compared to TIMESTAMPS's '1970-01-01 00:00:01' UTC to '2038-01-19 03:14:07' UTC. For purposes of storing birth dates, or something more than 30 years in the ...
https://stackoverflow.com/ques... 

Akka or Reactor [closed]

...e former) or for composable futures (the latter). If you look after a wide range of asynchronous patterns, maybe GPars will provide you a more complete solution. In the end, we might certainly have overlaps, in fact we're leaning toward a mixed approach (flexible composable eventing, distributed, a...
https://stackoverflow.com/ques... 

A generic list of anonymous class

... because you then "start" with a list that's empty. var list = Enumerable.Range(0, 0).Select(e => new { ID = 1, Name = ""}).ToList(); list.Add(new {ID = 753159, Name = "Lamont Cranston"} ); //etc. Lately, I've been writing it like this instead: var list = Enumerable.Repeat(new { ID = 1, Name ...
https://stackoverflow.com/ques... 

How to copy a file to multiple directories using the gnu cp command

...multiple sources but will only copy to a single destination. You need to arrange to invoke cp multiple times - once per destination - for what you want to do; using, as you say, a loop or some other tool. share | ...