大约有 4,918 项符合查询结果（耗时：0.0195秒） [XML]
Aligning UIToolBar items
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Objective C question not MonoTouch/C#
– Max MacLeod
Jul 31 '13 at 10:14
6
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Amazon S3 Change file download name
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In c#: request.ResponseHeaderOverrides.ContentDisposition = "attachment; filename=foo.bar";
– Amir M
May 9 '17 at 11:36
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Why is the default value of the string type null instead of an empty string?
... and it looks hacky and it's hard to stay consistent. I think (at least in C#-like languages) a good rule is "ban the null keyword in production code, use it like crazy in test code".
– sara
Mar 27 '16 at 19:06
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How can I add an ampersand for a value in a ASP.net/C# app config file value
I've got a C# program with values in a config file. What I want is to store ampersands for an url value like...
4 Answers
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Why is Multiple Inheritance not allowed in Java or C#?
I know that multiple inheritance is not allowed in Java and C#. Many books just say, multiple inheritance is not allowed. But it can be implemented by using interfaces. Nothing is discussed about why it is not allowed. Can anybody tell me precisely why it is not allowed?
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How to get a user's client IP address in ASP.NET?
...'s blog post "Gotcha: HTTP_X_FORWARDED_FOR returns multiple IP addresses"
C#
protected string GetIPAddress()
{
System.Web.HttpContext context = System.Web.HttpContext.Current;
string ipAddress = context.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];
if (!string.IsNullOrEmpty(ipAdd...
Using IQueryable with Linq
...le.WriteLine("{0}: {1}", row.Id, row.Name);
}
}
this becomes (by the C# compiler):
var qry = ctx.Customers.Where(cust => cust.Region == "North")
.Select(cust => new { cust.Id, cust.Name });
which is again interpreted (by the C# compiler) as:
var qry = Queryable.Selec...
Why no generics in Go?
...face{} is not equivalent to void* pointers in C. Better analogies would be C#'s System.Object or Objective-C's id types. Type information is preserved and can be "cast" (asserted, actually) back to its concrete type. Get the gritty details here: golang.org/ref/spec#Type_assertions
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Method can be made static, but should it?
...methods versus Instance methods
10.2.5 Static and instance members of the C# Language Specification explains the difference. Generally, static methods can provide a very small performance enhancement over instance methods, but only in somewhat extreme situations (see this answer for some more detai...
Regex Email validation
...)|(([0-9]{1,3}\.){3}[0-9]{1,3}))$";
For more info go read about it here: C# – Email Regular Expression
Also, this checks for RFC validity based on email syntax, not for whether the email really exists. The only way to test that an email really exists is to send and email and have the user verif...