大约有 43,000 项符合查询结果（耗时：0.0587秒） [XML]
Better techniques for trimming leading zeros in SQL Server?
...both Leading and Trailing zero's.
--Avoid losing those Trailing zero's and converting embedded spaces into more zeros.
--I added a non-whitespace character ("_") to retain trailing zero's after calling Replace().
--Simply remove the RTrim() function call if you want to preserve trailing spaces.
--If...
CDC:DrawText 多行显示文本（文本自动换行） - C++ UI - 清泛IT社区，为创新赋能！
... | DT_TOP | DT_WORDBREAK | DT_EDITCONTROL, m_pfSongTi);
函数原型：
int DrawText(
HDC hDC, // handle to DC
LPCTSTR lpString, // text to draw
int nCount, // text length
LPRE...
Read Excel File in Python
...
A somewhat late answer, but with pandas it is possible to get directly a column of an excel file:
import pandas
import xlrd
df = pandas.read_excel('sample.xls')
#print the column names
print df.columns
#get the values for a given column
values = df['Arm_id']...
Comparing Dates in Oracle SQL
...
Single quote must be there, since date converted to character.
Select employee_id, count(*)
From Employee
Where to_char(employee_date_hired, 'DD-MON-YY') > '31-DEC-95';
share
...
Executing Batch File in C#
...
This should work. You could try to dump out the contents of the output and error streams in order to find out what's happening:
static void ExecuteCommand(string command)
{
int exitCode;
ProcessStartInfo processInfo;
Process process;
processInfo = new ProcessStartInfo("cmd.exe"...
Passing an integer by reference in Python
...n Python, assignment (=) takes whatever object is the result of the right hand side and binds it to whatever is on the left hand side *(or passes it to the appropriate function).
Understanding this, we can see why there is no way to change the value of an immutable object inside a function -- you c...
What's the best way to retry an AJAX request on failure using jQuery?
...{func(param)}. That way, you can directly pass the parameter along without converting it to a string and back, which can fail very easily!
– fabspro
Sep 28 '13 at 15:36
...
Setting dynamic scope variables in AngularJs - scope.
...
The solution I have found is to use $parse.
"Converts Angular expression into a function."
If anyone has a better one please add a new answer to the question!
Here is the example:
var the_string = 'life.meaning';
// Get the model
var model = $parse(the_string);
//...
Standardize data columns in R
...the output of scale is Nx1 matrix so ideally we should add an as.vector to convert the matrix type back into a vector type. Thanks Julian!
EDIT 2 (2019): Quoting Duccio A.'s comment: For the latest dplyr (version 0.8) you need to change dplyr::funcs with list, like dat %>% mutate_each_(list(~sca...
Python: List vs Dict for look up table
...f you don't need to associate values, use sets.
Memory
Both dictionaries and sets use hashing and they use much more memory than only for object storage. According to A.M. Kuchling in Beautiful Code, the implementation tries to keep the hash 2/3 full, so you might waste quite some memory.
If you...