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How can you do anything useful without mutable state?
...where in the application. It looks a little bulky, but that's only because C# is a verbose language. Here's the equivalent program in F#:
type 'a stack =
| Cons of 'a * 'a stack
| Nil
let rec append x y =
match x with
| Cons(hd, tl) -> Cons(hd, append tl y)
| Nil -> y
le...
How does JavaScript .prototype work?
...
In a language implementing classical inheritance like Java, C# or C++ you start by creating a class--a blueprint for your objects--and then you can create new objects from that class or you can extend the class, defining a new class that augments the original class.
In JavaScript you...
When and why are database joins expensive?
... use AddWithValue to pass a parameter constraining a query on this column. C# strings are Unicode, so the inferred parameter type will be NVARCHAR, which doesn't match VARCHAR.
VARCHAR to NVARCHAR is a widening conversion so it happens implicitly - but say goodbye to indexing, and good luck workin...
Does anyone beside me just NOT get ASP.NET MVC? [closed]
...ctionality to WebForms, make sure to include all of the designer-generated C#, and the code-behind C# along with the .aspx code to be sure that the MVC solution is really not, in fact, much simpler.
When combined with judicious use of partial views for repeatable bits of presentation logic, it real...
Fastest way to determine if an integer's square root is an integer
... return 0;
}
Eliminating the switch statement had little effect on the C# code.
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List of Timezone ID's for use with FindTimeZoneById() in C#?
... Line West</option>
</select>
And if you'd like to use it in C#.NET MVC in a Razor view:
var timezones = new List<SelectListItem> {
new SelectListItem() { Value="", Text="Select timezone...", Selected = false },
new SelectListItem() { Value="Morocco Standard Time", Text="(GMT) ...
How can I perform a culture-sensitive “starts-with” operation from the middle of a string?
... note that Java's ignore case comparison doesn't do full case folding like C#'s CompareOptions.IgnoreCase. So they are opposite in this regard: Java
does full casemapping, but simple case folding - C# does simple casemapping, but full case folding.
So it's likely that you need a 3rd party library ...
正则表达式 30 分钟入门教程 - 更多技术 - 清泛网 - 专注C/C++及内核技术
... {n,}?
重复n次以上，但尽可能少重复
处理选项
在C#中，你可以使用Regex(String, RegexOptions)构造函数来设置正则表达式的处理选项。如：Regex regex = new Regex(@"\ba\w{6}\b", RegexOptions.IgnoreCase);
上面介绍了几个选项如忽略大小写，...
Proper use of the IDisposable interface
...d resources. We do this by overriding the Finalize() method.
Note: In C#, you don't explicitly override the Finalize() method.
You write a method that looks like a C++ destructor, and the
compiler takes that to be your implementation of the Finalize() method:
~MyObject()
{
//we're b...
NOT using repository pattern, use the ORM as is (EF)
...red procedures (bulk inserts, bulk deletes, CTEs, etc.) but I also code in C# so I don't have to type binary. We use EF so we can have the possibility of using different providers and to work with object graphs in a nice related way amongst many things. Certain abstractions are useful and some are n...