Remove excessive whitespace from string
0
$begingroup$
Is that standards-compliant?
#include <string>
#include <algorithm>
#include <iostream>
#include <cctype>
std::string remove_excessive_ws(std::string const &str)
{
std::string result{ str };
auto end{ std::remove_if(std::begin(result), std::end(result),
(std::string::value_type const &ch) {
return std::isspace(static_cast<unsigned>(ch)) &&
(std::isspace(static_cast<unsigned>((&ch)[1])) || (&ch)[1] == '');
}
)
};
result.erase(end, std::end(result));
return result;
}
int main()
{
char const *foo{ "Hello World! " };
std::cout << '"' << remove_excessive_ws(foo) << ""n";
}
It's about accessing (&ch)[1]. I think it should be legal, but I am not sure. After all std::find_if() could copy the entity and pass it to the function and the pointer (&ch) + 1 might not be valid.
c++
asked 4 mins ago
SwordfishSwordfish
1477
$endgroup$
add a comment |
0
$begingroup$
Is that standards-compliant?
#include <string>
#include <algorithm>
#include <iostream>
#include <cctype>
std::string remove_excessive_ws(std::string const &str)
{
std::string result{ str };
auto end{ std::remove_if(std::begin(result), std::end(result),
(std::string::value_type const &ch) {
return std::isspace(static_cast<unsigned>(ch)) &&
(std::isspace(static_cast<unsigned>((&ch)[1])) || (&ch)[1] == '');
}
)
};
result.erase(end, std::end(result));
return result;
}
int main()
{
char const *foo{ "Hello World! " };
std::cout << '"' << remove_excessive_ws(foo) << ""n";
}
It's about accessing (&ch)[1]. I think it should be legal, but I am not sure. After all std::find_if() could copy the entity and pass it to the function and the pointer (&ch) + 1 might not be valid.
c++
asked 4 mins ago
SwordfishSwordfish
1477
$endgroup$
add a comment |
0
0
0
$begingroup$
Is that standards-compliant?
#include <string>
#include <algorithm>
#include <iostream>
#include <cctype>
std::string remove_excessive_ws(std::string const &str)
{
std::string result{ str };
auto end{ std::remove_if(std::begin(result), std::end(result),
(std::string::value_type const &ch) {
return std::isspace(static_cast<unsigned>(ch)) &&
(std::isspace(static_cast<unsigned>((&ch)[1])) || (&ch)[1] == '');
}
)
};
result.erase(end, std::end(result));
return result;
}
int main()
{
char const *foo{ "Hello World! " };
std::cout << '"' << remove_excessive_ws(foo) << ""n";
}
It's about accessing (&ch)[1]. I think it should be legal, but I am not sure. After all std::find_if() could copy the entity and pass it to the function and the pointer (&ch) + 1 might not be valid.
c++
asked 4 mins ago
SwordfishSwordfish
1477
$endgroup$
Is that standards-compliant?
#include <string>
#include <algorithm>
#include <iostream>
#include <cctype>
std::string remove_excessive_ws(std::string const &str)
{
std::string result{ str };
auto end{ std::remove_if(std::begin(result), std::end(result),
(std::string::value_type const &ch) {
return std::isspace(static_cast<unsigned>(ch)) &&
(std::isspace(static_cast<unsigned>((&ch)[1])) || (&ch)[1] == '');
}
)
};
result.erase(end, std::end(result));
return result;
}
int main()
{
char const *foo{ "Hello World! " };
std::cout << '"' << remove_excessive_ws(foo) << ""n";
}
It's about accessing (&ch)[1]. I think it should be legal, but I am not sure. After all std::find_if() could copy the entity and pass it to the function and the pointer (&ch) + 1 might not be valid.
c++
c++
asked 4 mins ago
SwordfishSwordfish
1477
asked 4 mins ago
SwordfishSwordfish
1477
edited 2 mins ago
Swordfish
asked 4 mins ago
SwordfishSwordfish
1477
asked 4 mins ago
SwordfishSwordfish
1477
asked 4 mins ago
SwordfishSwordfish
1477
1477
add a comment |
add a comment |
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