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I have a large vector (10^9 elements) of chars, and I was wondering what is the fastest way to write such vector to a file. So far I've been using next code:
vector<char> vs;
// ... Fill vector with data
ofstream outfile("nanocube.txt", ios::out | ios::binary);
ostream_iterator<char>…
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I have two questions about STL
1) why STL is not thread-safe? Is there any structure that is thread-safe?
2) How to debug STL using GDB? In GDB, how can I print a vector?
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as seen on Oracle Blogs
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If you've used C++ you undoubtedly have used the Standard Template Libraries. Designed for in-memory management of data and collections of data this is a core aspect of all C++ programs.
Berkeley DB is a database library with a variety of APIs designed to ease development, one of those APIs extends…
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I have an old structure class like this: typedef vector<vector<string>> VARTYPE_T; which works as a single variable. This variable can hold from one value over a list to data like a table. Most values are long,double, string or double [3] for coordinates (x,y,z). I just convert them as…
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I'm trying to sort a list (part of a class) in descending containg items of a struct but it doesn't compile(error: no match for 'operator-' in '__last - __first'):
sort(Result.poly.begin(), Result.poly.end(), SortDescending());
And here's SortDescending:
struct SortDescending
{
bool operator()(const…
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as seen on Oracle Blogs
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The Batch Best Practices for Oracle Utilities Application Framework based products (Doc Id: 836362.1) and Technical Best Practices for Oracle Utilities Application Framework Based Products (Doc Id: 560367.1) have been updated with updated and new advice for the various versions of the Oracle…
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As most C++ programmers should know, partial template specialization of free functions is disallowed. For example, the following is illegal C++:
template <class T, int N>
T mul(const T& x) { return x * N; }
template <class T>
T mul<T, 0>(const T& x) { return T(0); }
//…
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Say I have a class which represents a person, a variable within that class would be $name.
Previously, In my scripts I would create an instance of the object then set the name by just using:
$object->name = "x";
However, I was told this was not best practice? That I should have a function set_name()…
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I have been given the task to design a database to store a lot of information for our company. Because the task is rather big and contains multiple modules where users should be able to do stuff, I'm worried about designing a good data model for this. I just don't want to end up with a badly designed…
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All,
I'm in the process now of building a SaaS tool that allows network admins to generate notification emails to the members of the end-users of our platform (among many many other things). I'm running into a bit of an "out of my expertise" wall, as I know there are a lot of variables involved…
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