大约有 16,000 项符合查询结果（耗时：0.0447秒） [XML]
NumPy or Pandas: Keeping array type as integer while having a NaN value
...Wes, is there any update on this? We run into issues that join columns are converted into either ints or floats, based on the existence of a NA value in the original list. (Creating issues later on when trying to merge these dataframes)
– Carst
Jul 23 '13 at 21...
How to get the caller's method name in the called method?
...nd debugging locally but not really something you want in your production system.
– robru
Feb 10 '15 at 2:08
@EugeneK...
Unique random string generation
... way, but to get something looking like your example, you probably want to convert it to a Base64 string:
Guid g = Guid.NewGuid();
string GuidString = Convert.ToBase64String(g.ToByteArray());
GuidString = GuidString.Replace("=","");
GuidString = GuidString.Replace("+","");
I get r...
Convert JSON String To C# Object
Trying to convert a JSON string into an object in C#. Using a really simple test case:
13 Answers
...
How can I randomize the lines in a file using standard tools on Red Hat Linux?
...
A one-liner for python:
python -c "import random, sys; lines = open(sys.argv[1]).readlines(); random.shuffle(lines); print ''.join(lines)," myFile
And for printing just a single random line:
python -c "import random, sys; print random.choice(open(sys.argv[1]).readlines())...
How to get a function name as a string?
...ther choice, which is: def wrapper(kwargs): super(ExtendedClass,self).call(sys._getframe().f_code.co_name, kwargs). So, the answer from Albert Vonpupp looks better to me.
– Richard Gomes
Aug 30 '13 at 19:20
...
Specifically, what's dangerous about casting the result of malloc?
...h. Compilers may assume that malloc is a function returning int, therefore converting the void* pointer actually returned by malloc to int and then to your pointer type due to the explicit cast. On some platforms, int and pointers may take up different numbers of bytes, so the type conversions may l...
How to pretty print XML from the command line?
...;/foo><bar value="ipsum" /></root>' |
python -c 'import sys;import xml.dom.minidom;s=sys.stdin.read();print(xml.dom.minidom.parseString(s).toprettyxml())'
saxon-lint
You need saxon-lint:
echo '<root><foo a="b">lorem</foo><bar value="ipsum" /></root&g...
Perform commands over ssh with Python
...
spur apparently only works on unix systems cause it has a dependency on termios. Does anybody know a good library for Windows?
– Gabriel
Jun 5 '13 at 1:25
...
SQL Query to concatenate column values from multiple rows in Oracle
...ed and unsupported by Oracle, it's recommended not to use it in production system.
With XMLAGG you can do the following:
SELECT XMLAGG(XMLELEMENT(E,ename||',')).EXTRACT('//text()') "Result"
FROM employee_names
What this does is
put the values of the ename column (concatenated with a comma) fr...