大约有 43,000 项符合查询结果(耗时:0.0521秒) [XML]
Casting vs using the 'as' keyword in the CLR
When programming interfaces, I've found I'm doing a lot of casting or object type conversion.
18 Answers
...
Storing integer values as constants in Enum manner in java [duplicate]
I'm currently creating integer constants in the following manner.
6 Answers
6
...
Why am I getting 'Assembly '*.dll' must be strong signed in order to be marked as a prerequisite.'?
I'm trying to compile my excel addin using C# 4.0, and started to get this problem when building my project in Visual Studio. It's important to tell you that I haven't had this problem before. What could cause this to happen?
...
Does the C++ standard mandate poor performance for iostreams, or am I just dealing with a poor imple
...eams, I get met with a wave of disbelief. Yet I have profiler results showing large amounts of time spent in iostream library code (full compiler optimizations), and switching from iostreams to OS-specific I/O APIs and custom buffer management does give an order of magnitude improvement.
...
How do I get a list of column names from a psycopg2 cursor?
...erate column labels directly from the selected column names, and recall seeing that python's psycopg2 module supports this feature.
...
In Ruby, is there an Array method that combines 'select' and 'map'?
I have a Ruby array containing some string values. I need to:
14 Answers
14
...
How can I clone an SQL Server database on the same server in SQL Server 2008 Express?
I have an MS SQL Server 2008 Express system which contains a database that I would like to 'copy and rename' (for testing purposes) but I am unaware of a simple way to achieve this.
...
Rule-of-Three becomes Rule-of-Five with C++11?
So, after watching this wonderful lecture on rvalue references, I thought that every class would benefit of such a "move constructor", template<class T> MyClass(T&& other) edit and of course a "move assignment operator", template<class T> MyClass& operator=(T&&...
Should one use < or
...
The first is more idiomatic. In particular, it indicates (in a 0-based sense) the number of iterations. When using something 1-based (e.g. JDBC, IIRC) I might be tempted to use <=. So:
for (int i=0; i < count; i++) // For 0-based APIs
for (int i=...
Why does dividing two int not yield the right value when assigned to double?
How come that in the following snippet
10 Answers
10
...
