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How do I convert NSMutableArray to NSArray?
...
However, casting to (NSArray *) still allows a cast back up to (NSMutable *). Ain't that the case?
– sharvey
Nov 20 '10 at 2:22
...
error C2440: \'initializing\' : cannot convert from \'char *\' to \'co...
...har> > *'
Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
//输出一行中所有字符
void printchar(string &line)
{
istringstream iss(line);
string word;
while(iss>>word)
for(vector<string>::const_...
Why is “int i = 2147483647 + 1;” OK, but “byte b = 127 + 1;” is not compilable?
...t has to do with Java not supporting coercions (*). You have to add a typecast
byte b = (byte)(127 + 1);
and then it compiles.
(*) at least not of the kind String-to-integer, float-to-Time, ... Java does support coercions if they are, in a sense, non-loss (Java calls this "widening").
And no,...
ListCtrl 重绘（Custom Draw） - C/C++ - 清泛网 - 专注C/C++及内核技术
...NMHDR* pNMHDR, LRESULT* pResult )
{
NMLVCUSTOMDRAW* pLVCD = reinterpret_cast<NMLVCUSTOMDRAW*>( pNMHDR );
// Take the default processing unless we set this to something else below.
*pResult = 0;
// First thing - check the draw stage. If it's the control's prepaint
// stage,...
SQL query to group by day
... Sales
GROUP BY
saledate
If you're using MS SQL 2008:
SELECT
CAST(created AS date) AS saledate,
SUM(amount)
FROM
Sales
GROUP BY
CAST(created AS date)
share
|
improve this ...
How do I use reflection to call a generic method?
...n "normal" usage would have had its type inferred, then it simply comes to casting the object of unknown type to dynamic. Here's an example:
class Alpha { }
class Beta { }
class Service
{
public void Process<T>(T item)
{
Console.WriteLine("item.GetType(): " + item.GetType()
...
What is the use of the ArraySegment class?
...ugh they inexplicably made GetEnumerator private, meaning you're forced to cast to IEnumerable<T> (a boxing conversion) to call it. Ugh!
– BlueRaja - Danny Pflughoeft
Nov 1 '17 at 12:59
...
Delete duplicate records in SQL Server?
...columns (and it also doesn't work with GUID's)
For 2008R2 you'll need to cast the GUID to a type supported by MIN, e.g.
delete from GuidEmployees
where CAST(ID AS binary(16)) not in
(
select min(CAST(ID AS binary(16)))
from GuidEmployees
group by EmployeeName
);
SqlFiddle for vario...
Python division
... Python is giving you an integer back:
>>> 10 / 90
0
If if you cast this to a float afterwards the rounding will have already been done, in other words, 0 integer will always become 0 float.
If you use floats on either side of the division then Python will give you the answer you expect...
ASP.NET MVC Razor pass model to layout
...he property.
Set it to the ViewData field (or ViewBag)
In the Layout page, cast that property to your type.
Example:
Controller:
public class MyController : Controller
{
public MainLayoutViewModel MainLayoutViewModel { get; set; }
public MyController()
{
this.MainLayoutViewMo...