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What is the best way to concatenate two vectors?
...< i << endl;
}
should give you
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Note boost::join does not copy the two vectors into a new container
but generates a pair of iterators (range) that cover the span of
both containers. There will be some performance overhead but maybe
less that copying all the data to a new co...
Stack, Static, and Heap in C++
...e without garbage collection.)
Personally, when I hear people say that C++ doesn't have garbage collection, my mind tags that as a feature of C++, but I'm probably in the minority. Probably the hardest thing for people to learn about programming in C and C++ are pointers and how to correctly handle ...
How to keep onItemSelected from firing off on a newly instantiated Spinner?
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This does not work. Answer by @casanova works. That should be the accepted answer.
– Siddharth
Feb 18 '14 at 6:51
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Is there a short cut for going back to the beginning of a file by vi editor?
...cuts when you really need to do so. Even ctrl + B sometimes is too slow. Does anyone know such a tool?
9 Answers
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What can I do to resolve a “Row not found or changed” Exception in LINQ to SQL on a SQL Server Compa
... of "never".
The same symptom will appear when the data types of a field does not match the data type in SQL, or if fields are missing, since LINQ will not be able to make sure the SQL data has not changed since reading the data.
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how can you easily check if access is denied for a file in .NET?
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This answer does not answer the question "how to check whether I have rights to open the file" at some instance before trying to open it. The case may very well be, that if permission is not allowed at that instance, the software will n...
How do I get the number of days between two dates in JavaScript?
...ed, so we'll write
// a simple parse function for U.S. date format (which does no error checking)
function parseDate(str) {
var mdy = str.split('/');
return new Date(mdy[2], mdy[0]-1, mdy[1]);
}
function datediff(first, second) {
// Take the difference between the dates and divi...
What is the fastest way to compute sin and cos together?
...NCOS was added at 387 processors, so you can hardly find a processor which doesn't support it.
Edit:
Intel's documentation states that FSINCOS is just about 5 times slower than FDIV (i.e., floating point division).
Edit:
Please note that not all modern compilers optimize calculation of sine and co...
Why doesn't Mockito mock static methods?
... means they either implement an interface at runtime (that's what EasyMock does if I'm not mistaken), or they inherit from the class to mock (that's what Mockito does if I'm not mistaken). Both approaches do not work for static members, since you can't override them using inheritance.
The only way ...
Why is i++ not atomic?
... update issues. So why potentially wasting performance for something if it doesn’t solve the problem.
– Holger
Aug 7 '14 at 10:49
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