大约有 2,253 项符合查询结果（耗时：0.0149秒） [XML]
Why is Spring's ApplicationContext.getBean considered bad?
I asked a general Spring question: Auto-cast Spring Beans and had multiple people respond that calling Spring's ApplicationContext.getBean() should be avoided as much as possible. Why is that?
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Is it possible to dynamically compile and execute C# code fragments?
... select i;
}
}");
results.Errors.Cast<CompilerError>().ToList().ForEach(error => Console.WriteLine(error.ErrorText));
}
}
The class of primary importance here is the CSharpCodeProvider which utilises the compiler to compile code on the fly. If...
bool to int conversion
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There seems to be no problem since the int to bool cast is done implicitly. This works in Microsoft Visual C++, GCC and Intel C++ compiler. No problem in either C or C++.
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Macro vs Function in C
...ch as checking their type, sizeof, check struct members are present before casting(can be useful for polymorphic types).Or check an array meets some length condition.see: https://stackoverflow.com/a/29926435/432509
While its noted that functions do type checking, C will coerce values too (ints/float...
Using current time in UTC as default value in PostgreSQL
...now()::timestamp
If your other timestamp are without time zone then this cast will yield the matching type "timestamp without time zone" for the current time.
I would like to read what others think about that option, though. I still don't trust in my understanding of this "with/without" time zone...
MySQL Results as comma separated list
...in and want to output a comma-delimited list to the page, use GROUP_CONCAT(CAST(s.name AS CHAR)) or else it will just return something wholly unuseful like [BLOB - 20 Bytes].
– devios1
Mar 1 '12 at 15:52
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Why does Math.Round(2.5) return 2 instead of 3?
...ng)
Java Math.Round rounds away from zero (it floors the result, adds 0.5, casts to an integer). There's an alternative in BigDecimal
Perl uses a similar way to C
Javascript is the same as Java's Math.Round.
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Resolving ambiguous overload on function pointer and std::function for a lambda using +
... (see discussion in the comments).
Still, I'd recommend using an explicit cast to the function pointer type if you want to avoid the ambiguity: you don't need to ask on SO what is does and why it works ;)
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Why does C# not provide the C++ style 'friend' keyword? [closed]
...t. Like accessors+mutators, operators overloading, public inheritance, downcasting, etc., it's often misused, but it does not mean the keyword has no, or worse, a bad purpose.
See Konrad Rudolph's message in the other thread, or if you prefer see the relevant entry in the C++ FAQ.
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Should the hash code of null always be zero, in .NET
...riteLine((int)v);
it return 0, as expected, or simple Spring if we avoid casting to int.
So.. if you do the following:
Season? v = Season.Spring;
Season? vnull = null;
if(vnull == v) // never TRUE
EDIT
From MSDN
If two objects compare as equal, the GetHashCode method for each object m...