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The type must be a reference type in order to use it as parameter 'T' in the generic type or method
...ng deeper into generics and now have a situation I need help with. I get a compile error on the 'Derived' class below as shown in the subject title. I see many other posts similar to this one but I'm not seeing the relationship. Can someone tell me how to resolve this?
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What does @: (at symbol colon) mean in a Makefile?
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It means "don't echo this command on the output." So this rule is saying "execute the shell command : and don't echo the output.
Of course the shell command : is a no-op, so this is saying "do nothing, and don't tell."
Why?
The trick here is that ...
arrow operator (->) in function heading
...es. So you try:
template <typename T1, typename T2>
decltype(a + b) compose(T1 a, T2 b);
and the compiler will tell you that it does not know what a and b are in the decltype argument. That is because they are only declared by the argument list.
You could easily work around the problem by ...
Undoing a commit in TortoiseSVN
I committed a bunch of files (dozens of files in different folders) by accident. What is the easiest, cleanest (and safest!) way to 'undo' that commit without having to delete the files from my working directory?
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LEN function not including trailing spaces in SQL Server
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This is clearly documented by Microsoft in MSDN at http://msdn.microsoft.com/en-us/library/ms190329(SQL.90).aspx, which states LEN "returns the number of characters of the specified string expression, excluding trailing blanks". It is, however, an easy detail on to miss if you're not wary.
You n...
When editing Microsoft Office VBA, how can I disable the popup “Compile error” messages?
... syntactically valid, the VBA editor interrupts your work by popping up a "Compile error" message that has to be dismissed.
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PendingIntent does not send Intent extras
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OSGi, Java Modularity and Jigsaw
... keep the JRE code alive while splitting it up. It does not help code to become more modular, and I'm convinced that it will actually increase the maintenance required to evolve any library or application that uses it.
Finally: OSGi exists whereas Jigsaw does not exist yet and may never exist. The ...