大约有 23,000 项符合查询结果(耗时:0.0418秒) [XML]

https://stackoverflow.com/ques... 

Why do people say there is modulo bias when using a random number generator?

... klutt 19.6k1414 gold badges3737 silver badges6464 bronze badges answered Jun 12 '12 at 0:10 Nick DandoulakisNick Dandoulakis ...
https://stackoverflow.com/ques... 

Detect Windows version in .net

...: edition = "Enterprise Server for Itanium-based Systems"; break; case PRODUCT_ENTERPRISE_SERVER_V: edition = "Enterprise Server without Hyper-V"; ...
https://stackoverflow.com/ques... 

Remove rows with all or some NAs (missing values) in data.frame

...ata.frame does not support cols=. Benchmark result Here is a comparison of base (blue), dplyr (pink), and data.table (yellow) methods for dropping either all or select missing observations, on notional dataset of 1 million observations of 20 numeric variables with independent 5% likelihood of being ...
https://stackoverflow.com/ques... 

How to check if any flags of a flag combination are set?

... { CheckIsEnum<T>(true); long lValue = Convert.ToInt64(value); long lFlag = Convert.ToInt64(flag); return (lValue & lFlag) != 0; } public static IEnumerable<T> GetFlags<T>(this T value) where T : struct { CheckIsEnum<T&gt...
https://stackoverflow.com/ques... 

How to hide columns in HTML table?

I have created a table in ASPX. I want to hide one of the columns based on the requirement but there is no attribute like visible in the HTML table building. How can I solve my problem? ...
https://stackoverflow.com/ques... 

Programmatically get the cache line size?

... @android : I use fedora-18 x64 machine with core-i5 processor. cat /sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size returns 64 in my system. Same for index1,2,3 folders also. – Abid Rahman K Aug 8 '13 ...
https://stackoverflow.com/ques... 

Pandas percentage of total with groupby

...e level='state' kwarg in div tells pandas to broadcast/join the dataframes base on the values in the state level of the index. share | improve this answer | follow ...
https://stackoverflow.com/ques... 

Mercurial move changes to a new branch

...n is one solution for you problem. IMHO a simpler workflow is to use the rebase extension. Suppose you have a history like this: @ changeset: 2:81b92083cb1d | tag: tip | summary: my new feature: edit file a | o changeset: 1:8bdc4508ac7b | summary: my new feature: add file b...
https://stackoverflow.com/ques... 

hexadecimal string to byte array in python

... bits = '' for i in range(len(s)): bits += hex_table[int(s[i], base=16)] return bits share | improve this answer | follow | ...
https://stackoverflow.com/ques... 

Fastest hash for non-cryptographic uses?

I'm essentially preparing phrases to be put into the database, they may be malformed so I want to store a short hash of them instead (I will be simply comparing if they exist or not, so hash is ideal). ...