Questions tagged [lexical-cast]
69 questions
0
votes
2 answers
Extended boost::lexical_cast for other class datatypes
Is it possible to extend boost::lexical_cast to handle other datatypes, without actually modifying those classes?
In my case, I want to extend it to handle things like cv::Point and cv::Point3, taking a string-separated list of coordinates and…
Yeraze
- 3,269
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0
votes
1 answer
bad_lexical_cast exception on overloaded operator ">>"
I've overloaded operator ">>" for an Enum:
#include
#include
using namespace std;
enum MyEnum
{
ONE = 0,
TWO,
TREE,
MAX
};
const char* MyEnumString[MAX] =
{
"ONE"
…
Sanich
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0
votes
0 answers
C++ check if string is numeric
I need to check if an std::string is a number. By number I mean either a whole number or a number with a decimal point (base 10).
I'm fine with the limits that long long provides so anything outside that I don't care about. I don't have boost, but…
LeviX
- 3,096
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0
votes
1 answer
Parse and cast csv based on map type c++
Does anyone know of any libraries or examples which will read/write a csv and depending on map (potentially nested) passed to infer the type and populate the map.
This will probably involve some recursive templated code.
ie
map
Bloogle
- 3
- 1
0
votes
1 answer
Using boost::lexical_cast(string)
I am a beginner and need an explanation as to why this doesn't work:
string myArray[620223];
//myArray is then populated with a while loop using ifstream and getline
string myString = myArray[9];
double myValue;
try {
myValue =…
user1830888
- 1
- 1
0
votes
1 answer
boost::lexical_cast with positive sign
How can I make boost::lexical_cast include a positive sign when converting to std::string?
I intend to do the same as: snprintf( someArray, someSize, "My string which needs sign %+d", someDigit );. Here, someDigit would be put in the string as…
Raf Berkvens
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0
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1 answer
boost::lexical_cast without runtime libraries
I'm in a situation where I would like to use boost::lexical_cast, but cannot make use of C/C++ runtime libraries, and thus cannot use lexical_cast. I don't know Boost extremely well, but I have seen the use of blocks such as:
#ifdef…
Austin
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- 10
-1
votes
1 answer
C++ header file to be included for lexical cast
My compiler(GCC for C++) throws error when I include the #include header file for converting integer type to string type for some program.
Can anyone help me with this?
This is for a small code in C++, I've tried it for the first…
Stan_Dodo
- 1
- 3
-5
votes
2 answers
Strange Boost::Lexical_cast conversion
To make it short, here is the code :
std::string m_specs = "f500000";
float m_sten = 21.0;
std::cout << m_specs << std::endl;
m_specs = "f" + boost::lexical_cast(m_sten);
std::cout << m_specs << std::endl;
The first output will be :…
Marion
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