options_boost_po.cc File Reference

#include "options_boost_po.h"
#include "parse_primitives.h"
#include <sstream>
#include <algorithm>
#include <iterator>
#include <utility>

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Functions
bool	is_number (const std::string &s)

Function Documentation

is_number()

bool is_number

(

const std::string &

s

)

Definition at line 12 of file options_boost_po.cc.

References substring::begin, substring::end, f, and parseFloat().

Referenced by VW::config::options_boost_po::add_and_parse().

{
  substring ss = {const_cast<char*>(s.c_str()), const_cast<char*>(s.c_str()) + s.size()};
  auto endptr = ss.end;
  auto f = parseFloat(ss.begin, &endptr);
  if ((endptr == ss.begin && ss.begin != ss.end) || std::isnan(f))
  {
    return false;
  }

  return true;
}