大约有 46,000 项符合查询结果（耗时：0.0343秒） [XML]
Email Address Validation in Android on EditText [duplicate]
...
|
edited Feb 21 at 13:14
milosmns
2,53933 gold badges2727 silver badges3838 bronze badges
an...
How to run crontab job every week on Sunday
...
10 Answers
10
Active
...
How do I upgrade my ruby 1.9.2-p0 to the latest patch level using rvm?
My current version of ruby is ruby 1.9.2p0 (2010-08-18 revision 29036) [x86_64-darwin10.5.0] but I want to update it to the latest patch level using rvm. How can I do this?
...
How to drop a list of rows from Pandas dataframe?
...
12 Answers
12
Active
...
Pandas: drop a level from a multi-level column index?
...
321
You can use MultiIndex.droplevel:
>>> cols = pd.MultiIndex.from_tuples([("a", "b"), ("...
Creating a Pandas DataFrame from a Numpy array: How do I specify the index column and column headers
...umns to DataFrame constructor, as in:
>>> pd.DataFrame(data=data[1:,1:], # values
... index=data[1:,0], # 1st column as index
... columns=data[0,1:]) # 1st row as the column names
edit: as in the @joris comment, you may need to change above to np.int_(dat...
How to get the primary IP address of the local machine on Linux and OS X? [closed]
...ould return me the primary (first) IP address of the localhost, other than 127.0.0.1
31 Answers
...
Razor HtmlHelper Extensions (or other namespaces for views) Not Found
...zor.Configuration.RazorWebSectionGroup, System.Web.WebPages.Razor, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
<section name="host" type="System.Web.WebPages.Razor.Configuration.HostSection, System.Web.WebPages.Razor, Version=1.0.0.0, Culture=neutral, PublicKeyToken...
How to output only captured groups with sed?
...e output as well as specifying what you do want.
string='This is a sample 123 text and some 987 numbers'
echo "$string" | sed -rn 's/[^[:digit:]]*([[:digit:]]+)[^[:digit:]]+([[:digit:]]+)[^[:digit:]]*/\1 \2/p'
This says:
don't default to printing each line (-n)
exclude zero or more non-digits
i...