大约有 44,000 项符合查询结果（耗时：0.0591秒） [XML]
Checking if a field contains a string
I'm looking for an operator, which allows me to check, if the value of a field contains a certain string.
10 Answers
...
Is it better to use Enumerable.Empty() as opposed to new List() to initialize an IEnumerable
...
I think most postings missed the main point. Even if you use empty array or empty list, those are objects and they are stored in memory. Than Garbage Collector has to take care of them. If you are dealing with high throughput application, it could be noticeable impact.
Enum...
When using a Settings.settings file in .NET, where is the config actually stored?
...membered).
Update: Strange but there are too many incorrect answers here. If you are looking for you user scoped settings file (user.config) it will be located in the following folder (for Windows XP):
C:\Documents and
Settings\(username)\Local
Settings\Application
Data\(company-name-if-e...
Linux: compute a single hash for a given folder & contents?
...
One possible way would be:
sha1sum path/to/folder/* | sha1sum
If there is a whole directory tree, you're probably better off using find and xargs. One possible command would be
find path/to/folder -type f -print0 | sort -z | xargs -0 sha1sum | sha1sum
And, finally, if you also need ...
How to randomize (shuffle) a JavaScript array?
...nswer skips element 0, the condition should be i-- not --i. Also, the test if (i==0)... is superfluous since if i == 0 the while loop will never be entered. The call to Math.floor can be done faster using ...| 0. Either tempi or tempj can be removed and the value be directly assigned to myArray[i] o...
Detect current device with UI_USER_INTERFACE_IDIOM() in Swift
What is the equivalent of UI_USER_INTERFACE_IDIOM() in Swift to detect between iPhone and iPad?
17 Answers
...
How can I get a view's current width and height when using autolayout constraints?
...
The answer is [view layoutIfNeeded].
Here's why:
You still get the view's current width and height by inspecting view.bounds.size.width and view.bounds.size.height (or the frame, which is equivalent unless you're playing with the view.transform).
...
Soft wrap at 80 characters in Vim in window of arbitrary width
...ur window with :set columns=86 (or with the mouse) to the proper size.
If you edit a file with a million lines in it, you may have trouble, but that's unlikely. You're wasting 6 columns of screen real estate this way too. So there are still all kinds of problems.
You can highlight past the 80...
Handle ModelState Validation in ASP.NET Web API
... {
var modelState = actionContext.ModelState;
if (!modelState.IsValid)
actionContext.Response = actionContext.Request
.CreateErrorResponse(HttpStatusCode.BadRequest, modelState);
}
}
}
...
What is the difference between “git branch” and “git checkout -b”?
... I think that git branch does the same thing.
How do these two commands differ, if they differ at all?
7 Answers
...