Boost.Any is a C++ library that offers a safe, generic container for single values of different value types.
Boost.Any is a C++ library that offers a safe, generic container for single values of different value types.
Questions tagged [boost-any]
118 questions
1
vote
3 answers
Boost: Vector of Distributions with any
Dear Stack Exchange Experts,
I am trying to set up a class (multivariate distribution function) that stores boost distributions in a std::vector (marginal distribution functions).
While this is possible using boost::variant (see my question: Boost:…
user3456032
- 187
- 1
- 5
1
vote
1 answer
boost spirit, boost any and quoted string - compile-time error
I have the following code:
#include
#include
#include
#include
template
struct parser : boost::spirit::qi::grammar
FrozenHeart
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1
vote
1 answer
boost spirit and boost any - unexpected result
I have the following code:
#include
#include
#include
#include
template
struct parser : boost::spirit::qi::grammar
FrozenHeart
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1
vote
2 answers
boost::any replacement for the code below
I wish get rid of boost dependency on my code. I have the following struct construct. When calling and using this struct at another place in the code boost::any_cast is used. I know a template class would do it, but finding it hard to write this…
user3204803
- 13
- 3
1
vote
2 answers
How can I return different type according to the value of parameter in C++?
I want to do something overload with different value of parameter in C++.
Something like dynamic language such as Python:
def foo(str):
if str == "a":
return str
if str == "b":
return true
if str == "c":
return 1
Is there some…
xunzhang
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1
vote
1 answer
Is boost::any movable?
This code compiles but I don't think it does what I intended, that is, move, don't copy, the boost::any object that was created on the stack into a std::vector
boost::any var;
var = std::string("StackOverflow");
std::vector…
user841550
- 1,067
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1
vote
1 answer
Implementing an any container
I'm well aware of boost::any and boost::variant, but in this instance they don't fit my needs.
Normally, to contain an object of unknown type, one would derive it from a common base and access the instance through virtual methods. But, what can one…
Twifty
- 3,267
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1
vote
0 answers
boost any cast trouble when reading a plist file
I'm reading some data from a plist file in visual c++.
data in file is somethig like this:
Caminando_001.png
x
y
width
height
offsetX
offsetY
originalWidth
originalHeight
I read until x key value and then I do something like
int Left =…
Fabricio
- 11
- 1
1
vote
2 answers
Does boost::any save a copy or reference/pointer?
Is the following code safe?
boost::any any_value;
{
std::string s = "HelloWorld";
any_value = s;
}
std::string ss = any_cast(any_value);
balki
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1 answer
C# - Any thing similar to boost::any?
I have a requirement where:
1. I need to store objects of any type in list
2. Avoid casting calls as much as possible
To that end I tried to come up with something. No matter what I tried I could not get rid of boxing\unboxing. I wanted to know…
neel roy
- 147
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- 13
0
votes
1 answer
How to retrieve data from a std::list containing boost::shared_ptr
I need helping trying to retrieve data held in a std::list>
I working on a Singleton Controller class with a private std::list. Client class(es) will be able to add/remove/edit concrete class objects to be used by the…
badboy11
- 541
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0
votes
2 answers
boost::any destructor crash
Main exe loads dll. Calls function from dll returning simple boost::any. If boost::any deleted after FreeLibrary app crash at destructor. It's ok. But I can't understand why this code also crash at r2 destructor, r2 created in main and delete…
micdelt
- 21
- 3
0
votes
2 answers
What will be an efficient way of converting a std::vector to a std::vector
I can use a loop to copy elements from boost::any vector to std::vector of floats.
It is inefficient in the sense that there are 50000 values to copy, vector can grow beyond 50K and I have to save the to the disk in different folders. So it is a…
Wajih
- 793
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0
votes
1 answer
Template cast operator and boost::any or std::any
I wrote a generic class to provide an easy JSON-based init to any class.
It was working like a charm until I want to apply it to a class that contain an enum.
my base class first parse the JSON, find the sub object of the JSON that have the same…
alexbuisson
- 7,699
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0
votes
1 answer
C++ Templates access a function with different types
So What I'm trying to do is something like this.
I have a template struct like this one:
template
struct TemplateTest
{
void test(T a)
{
switch (typeid(boost::any_cast(a)))
{
case typeid(int):
…
Vali
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