A Boost C++ library providing an implementation of tuple, a fixed-sized collection of elements, possibly of different types
Questions tagged [boost-tuples]
54 questions
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retrieving string from boost::tuples::tuple
After reading the article at https://www.boost.org/doc/libs/1_67_0/libs/tuple/doc/html/tuple_users_guide.html
The following note is a problem for me.
Note that extracting tuples with std::string or C-style string elements does not generally work,…
Martijn Klasing
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1 answer
copying data between different types of containers
I am trying to copy data from one container type to another container type, the containers are both double dimensional vectors, i am using boost::combine and boost::tie to iterate over the containers, the code builds fine but throws a bad_alloc when…
Ravikumar Tulugu
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Find position of element in a vector of boost tuples
I am iterating over a vector of boost::tuples in order to find an element. However I would also like to find the exact position of this element in the vector in order to delete it later.
This is the code, however the std::distance does not give me…
cateof
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1 answer
Map lookup using boost::tuple as key
I would like to understand how a key in the form of boost::tuple is looked up in the map, where Compare=std::less. For instance, this is the snippet of the code I'm working on:
typedef boost::tuple Key;
void *Data;
typedef…
Maddy
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Append element to boost::python::tuple
I'm trying to remove the second element from a boost::python::tuple object. The tuple from which I want to remove the second element is the list of arguments passed to a Python function call.
To remove the element I do like this:
BPY::object…
zeb
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2 answers
Detecting the reference types in a tuple
I learned about std::forward_as_tuple. I use this tech in my project:
template
tuple values(Ts&&... ts) // yes, values is renamed forward_as_tupe
{
return tuple(std::forward(ts)...)
}
class C_SQL { ...... };…
thomas
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Parsing a Boost:Tuple into a char* (with endianess)
I have many classes with varying implementations of their private member boost::tuple<> structures ie. or .
I now need to parse that tuple into a private const char* message (since I want to send it via tcp),…
dos
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boost multi index insertion errors with boost::tuple of references as the key for a ordered_unique index
I have boiled this down to the simplest example code I could think of.
I have a boost multi indexed by a member:
typedef const boost::tuple key_type;
Doing this seems make the multi-index think every item is equal…
user442585
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how to create a complex type using tuples and variadic templates
In first place, I'm not a very skilled programmer in C++11 and templates, I read a lot of posts but I can't figure out how to write my idea (if is even possible), saying that, this is my idea.
My idea is create a complex compiler-time type, I'm…
Trungus
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