大约有 41,000 项符合查询结果（耗时：0.0270秒） [XML]
Why is Dictionary preferred over Hashtable in C#?
... because you can't insert any random object into it, and you don't have to cast the values you take out.
Interestingly, the Dictionary<TKey, TValue> implementation in the .NET Framework is based on the Hashtable, as you can tell from this comment in its source code:
The generic Dictionary...
Compile time string hashing
...
You were missing a compile flag. Moreover I had to cast to size_t the value -1 in stop recursion template function. The updated version is available here (working from Clang 3.3) : goo.gl/vPMkfB
– Clement JACOB
May 23 '14 at 12:51
...
Associating enums with strings in C#
...verriding the ToString method to return Value. And then provided implicit cast operators to and from a string. public static implicit operator String(LogCategory category) { return Value; }.
– Zarepheth
Jan 24 '14 at 20:17
...
How to print a int64_t type in C
..._int = 999999999999999999;
printf("%" PRId64 "\n", my_int);
Or you could cast!
printf("%ld", (long)my_int);
printf("%lld", (long long)my_int); /* C89 didn't define `long long` */
printf("%f", (double)my_int);
If you're stuck with a C89 implementation (notably Visual Studio) you can perhaps use ...
Python's json module, converts int dictionary keys to strings
...so work for nested dicts and uses a dict comprehension.
If you want to to cast the values too, use:
def jsonKV2int(x):
if isinstance(x, dict):
return {int(k):(int(v) if isinstance(v, unicode) else v) for k,v in x.items()}
return x
Which tests the instance of the values and ca...
Entity Framework and SQL Server View
...ht legitimately need to return an empty string ''. What I did, was simply cast the column back to its own data type. for example if AnotherProperty had a datatype of varchar(50) I would cast it as such 'CONVERT(VARCHAR(50), AnotherProperty) AS [AnotherProperty]'. this masked the nullability from E...
How to force LINQ Sum() to return 0 while source collection is empty
...
This is the correct answer. All others fail. First casting to nullable and then comparing the final result against null.
– Mohsen Afshin
Sep 17 '15 at 4:37
...
How to flatten an ExpandoObject returned via JsonResult in asp.net mvc?
...
Nice. You can also cast the dynamic on the fly: return new JsonResult(((ExpandoObject)someIncomingDynamicExpando).ToDictionary(item => item.Key, item => item.Value))
– joeriks
May 13 '12 at 17:13
...
What is 'Pattern Matching' in functional languages?
...ys, ML languages implement pattern matching without run-time type-tests or casts, so the C# code is somewhat deceptive. Let's brush implementation details aside with some hand-waving please :) )
Data structure decomposition in a nutshell
Ok, let's go back to the peek method:
let peek s =
matc...
What is the right way to check for a null string in Objective-C?
...stinct Objective-C types 'struct NSNull *' and 'struct NSString *' lacks a cast Is there any way of removing this (I dunno if things have changed since this question was asked)?
– thebossman
Dec 2 '10 at 1:40
...