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How to initialize const member variable in a class?
....
Bjarne Stroustrup's explanation sums it up briefly:
A class is typically declared in a header file and a header file is typically included into many translation units. However, to avoid complicated linker rules, C++ requires that every object has a unique definition. That rule would be broken...
Get all column names of a DataTable into string array using (LINQ/Predicate)
...ase post it as a new question and include details of your code. But essentially: A DataGrid is not the same as a DataTable.
– Daniel Hilgarth
May 17 '13 at 8:08
3
...
Anatomy of a “Memory Leak”
... seen is in Chapter 7 of the free Foundations of Programming e-book.
Basically, in .NET a memory leak occurs when referenced objects are rooted and thus cannot be garbage collected. This occurs accidentally when you hold on to references beyond the intended scope.
You'll know that you have leaks w...
How to skip over an element in .map()?
...nce it has some cost, you can use the more general .reduce(). You can generally express .map() in terms of .reduce:
someArray.map(function(element) {
return transform(element);
});
can be written as
someArray.reduce(function(result, element) {
result.push(transform(element));
return result;
}...
RabbitMQ / AMQP: single queue, multiple consumers for same message?
...e messages? Ie, both consumers get message 1, 2, 3, 4, 5, 6? What is this called in AMQP/RabbitMQ speak? How is it normally configured?
No, not if the consumers are on the same queue. From RabbitMQ's AMQP Concepts guide:
it is important to understand that, in AMQP 0-9-1, messages are load balan...
What is the best data type to use for money in C#?
...d to
floating-point types, the decimal type has more precision and a
smaller range, which makes it appropriate for financial and monetary
calculations.
You can use a decimal as follows:
decimal myMoney = 300.5m;
sh...
Downloading an entire S3 bucket?
...eleased their Command Line Tools, which work much like boto and can be installed using
sudo easy_install awscli
or
sudo pip install awscli
Once installed, you can then simply run:
aws s3 sync s3://<source_bucket> <local_destination>
For example:
aws s3 sync s3://mybucket .
...
What strategies and tools are useful for finding memory leaks in .NET?
... this as the answer because its what worked for me in the end, but I think all of the other answers are very useful. By the way, this tool is more commonly called SciTech's Mem Profiler!
– Scott Langham
Oct 9 '08 at 12:44
...
How do function pointers in C work?
...nPtr)(2, 3); // sum == 5
Passing the pointer to another function is basically the same:
int add2to3(int (*functionPtr)(int, int)) {
return (*functionPtr)(2, 3);
}
We can use function pointers in return values as well (try to keep up, it gets messy):
// this is a function called functionFac...
Which iomanip manipulators are 'sticky'?
... the comments below:
By Martin:
@Chareles: Then by this requirement all manipulators are sticky. Except setw which seems to be reset after use.
By Charles:
Exactly! and the only reason that setw appears to behave differently is because there are requirements on formatted output operat...