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Inline functions vs Preprocessor macros
...ts.
Inline functions are actual functions whose body is directly injected into their call site. They can only be used where a function call is appropriate.
Now, as far as using macros vs. inline functions in a function-like context, be advised that:
Macros are not type safe, and can be expanded ...
How to delete duplicate rows in SQL Server?
...icated.
SELECT DISTINCT [col1],[col2],[col3],[col4],[col5],[col6],[col7]
INTO [newTable]
Go into the object explorer and delete the old table.
Rename the new table with the old table's name.
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How Should I Declare Foreign Key Relationships Using Code First Entity Framework (4.1) in MVC3?
...for resources on how to declare foreign key relationships and other constraints using code first EF 4.1 without much luck. Basically I am building the data model in code and using MVC3 to query that model. Everything works via MVC which is great (kudos to Microsoft!) but now I want it NOT to work be...
How to use WinForms progress bar?
...port progress back to the UI thread.
For example:
private void Calculate(int i)
{
double pow = Math.Pow(i, i);
}
private void button1_Click(object sender, EventArgs e)
{
progressBar1.Maximum = 100;
progressBar1.Step = 1;
progressBar1.Value = 0;
backgroundWorker.RunWorkerAsync(...
Advantage of switch over if-else statement
...n, so you don't lose anything. If in doubt put the most common cases first into the switch statement.
In the best case the optimizer may find a better way to generate the code. Common things a compiler does is to build a binary decision tree (saves compares and jumps in the average case) or simply ...
@import vs #import - iOS 7
... header files anyway.
So leaving the #import will be just the same as its converted to a module import where possible anyway
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C++ templates that accept only certain types
...<typename T> class my_template; // Declare, but don't define
// int is a valid type
template<> class my_template<int> {
...
};
// All pointer types are valid
template<typename T> class my_template<T*> {
...
};
// All other types are invalid, and will caus...
How do you use NSAttributedString?
... possible. So I've heard a little about the NSAttributedString which was introduced with the iPad SDK 3.2 (or around 3.2) and is available on the iPhone as of iPhone SDK 4.0 beta .
...
DateTime.Now vs. DateTime.UtcNow
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As you can see here, comparisons and math functions don't automatically convert to compatible times. The Timespan should have been almost one hour, but instead was almost 6. "utc < now" should have been true (I even added an hour to be sure), but was still false.
You can also see the 'work ...
Assign null to a SqlParameter
The following code gives an error - "No implicit conversion from DBnull to int."
18 Answers
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