大约有 21,000 项符合查询结果（耗时：0.0317秒） [XML]
Handling specific errors in JavaScript (think exceptions)
... "Exception thrown and not caught" error. Following is the exceedingly stupid (as always) explanation from msdn: "You included a throw statement, but it was not enclosed within a try block, or there was no associated catch block to trap the error. Exceptions are thrown from within the try block usin...
Turning a Comma Separated string into individual rows
...nctions from SQL Server:
Sample table:
CREATE TABLE Testdata
(
SomeID INT,
OtherID INT,
String VARCHAR(MAX)
)
INSERT Testdata SELECT 1, 9, '18,20,22'
INSERT Testdata SELECT 2, 8, '17,19'
INSERT Testdata SELECT 3, 7, '13,19,20'
INSERT Testdata SELECT 4, 6, ''
INSERT Testdata SELE...
MDI CDockablePane使用总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...pMenu::SetForceMenuFocus(FALSE);
InitUserToolbars(NULL, uiFirstUserToolBarId, uiLastUserToolBarId);
EnablePaneMenu(TRUE, ID_VIEW_CUSTOMIZE, 0, ID_VIEW_TOOLBAR);
CDockingManager::SetDockingMode(DT_SMART);
EnableAutoHidePanes(CBRS_ALIGN_ANY);
EnableDocking(CBRS_ALIGN_ANY);
（1） 第一种...
Bring a window to the front in WPF
...
This did the trick for me too. Thanks to gsb for the additional comment about what looks like a strange use of TopMost!
– Jen
Jul 15 '13 at 6:56
...
Best way to iterate through a Perl array
...sage: They're all the same except for #5.
for (@a) is special-cased to avoid flattening the array. The loop iterates over the indexes of the array.
In terms of readability: #1.
In terms of flexibility: #1/#4 and #5.
#2 does not support elements that are false. #2 and #3 are destructive.
...
NSDictionary - Need to check whether dictionary contains key-value pair or not
... @jbx72487 Dictionaries must contain objects; objectForKey: returns an id -- a pointer to an Objective-C object. If you are storing numbers, they must be "boxed" into an NSNumber. Even if the NSNumber is zero or false it will be still be a valid pointer and the above code will accurately detect ...
Revert to a commit by a SHA hash in Git? [duplicate]
...
When I did this I ended up with a bunch of Untracked Files in the working tree. However looking at the history I could see that those files did have a corresponding delete commit in that "Revert to SHA" commit. So after git reset -...
How can you programmatically tell an HTML SELECT to drop down (for example, due to mouseover)?
...okup for email adresses.
There are many JavaScript+HTML controls that provide this capability--look for autocomplete controls for ideas.
See this link for the Autocomplete control...http://ajaxcontroltoolkit.codeplex.com/
...
Check that Field Exists with MongoDB
...
Suppose we have a collection like below:
{
"_id":"1234"
"open":"Yes"
"things":{
"paper":1234
"bottle":"Available"
"bottle_count":40
}
}
We want to know if the bottle field is present or not?
Ans:
db.products.fi...
jQuery equivalent of getting the context of a Canvas
...TML element:
var myCanvasElem = $("#canvas").get(0);
Perhaps to help avoid any potential null object references since jquery returns null as an object but working with the element from .get(0) may not fail so silently... You can easily check if the canvas was found first before .get(0) like
if...