大约有 40,000 项符合查询结果（耗时：0.0836秒） [XML]
Select row with most recent date per user
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wow! not only did this work, i was allowed to create a view with this query even though it contains subqueries. before, when i tried to create a view containing subqueries, it didn't let me. are there rules as to why this is allowed but another one isn't?
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How to compare UIColors?
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I use blocks all the tine, but I've never seen syntax quite like this before. I guess maybe I've not used a block that returned an object. It's what's on the left side of the = that I was posting about.
– Victor Enge...
Set “this” variable easily?
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There are two methods defined for all functions in JavaScript, call(), and apply(). The function syntax looks like:
call( /* object */, /* arguments... */ );
apply(/* object */, /* arguments[] */);
What these functions do is call the function they were inv...
Why and How to avoid Event Handler memory leaks?
...andler and the possible leak. However, in my experience this is rarely actually a problem - because typically I find that the publisher and subscriber have roughly equal lifetimes anyway.
It is a possible cause... but in my experience it's rather over-hyped. Your mileage may vary, of course... you ...
Trying to fix line-endings with git filter-branch, but having no luck
...r gitattributes now documents another approach for "fixing" or normalizing all the line endings in your project. Here's the gist of it:
$ echo "* text=auto" >.gitattributes
$ git add --renormalize .
$ git status # Show files that will be normalized
$ git commit -m "Introduce end-of-line ...
.NET WebAPI Serialization k_BackingField Nastiness
...rk with Web API.
Just leave your model as is, and Web API would serialize all the public properties for you.
Only if you want to have more control about what's included, you then decorate your class with [DataContract] and the properties to be included with [DataMember] (because both DCS and JSON...
Chrome: timeouts/interval suspended in background tabs?
...ted) setTimeout is not very accurate but for most appliances not dramatically inaccurate. Now if I run the test in in Chrome and let it run in a background tab (so, switching to another tab and browse on there), returning to the test and inspecting te results (if the test finished) they are dramat...
What is a 'semantic predicate' in ANTLR?
...er: it parses an input string consisting of at least
// one number, optionally followed by zero or more comma's and numbers
parse
: number (',' number)* EOF
;
// matches a number that is between 1 and 3 digits long
number
: Digit Digit Digit
| Digit Digit
| Digit
;
// matches a si...
Controlling mouse with Python
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Tested on WinXP, Python 2.6 (3.x also tested) after installing pywin32 (pywin32-214.win32-py2.6.exe in my case):
import win32api, win32con
def click(x,y):
win32api.SetCursorPos((x,y))
win32api.mouse_event(win32con.MOUSEEVENTF_LEFTDOWN,x,y,0,0)
win32api.mouse_event(win...
Is String.Contains() faster than String.IndexOf()?
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Contains calls IndexOf:
public bool Contains(string value)
{
return (this.IndexOf(value, StringComparison.Ordinal) >= 0);
}
Which calls CompareInfo.IndexOf, which ultimately uses a CLR implementation.
If you want to see how ...