Convert a CString to an array of floats

» cpp » Convert a CString to an array of floats

By : Ajith N

Date : November 28 2020, 11:01 PM

it should still fix some issue The CString class template provides the Tokenize member, that can be used to split an input string into individual tokens. The tokens can then be converted to floating point values using the std::stof function:

code :

std::vector<float> ToFloats( const CString& numbers ) {
    std::vector<float> buffer;
    int start{ 0 };
    CString token = numbers.Tokenize( _T( "," ), start );
    while ( start != -1 ) {
        buffer.push_back( std::stof( { token.GetString(),
                                       static_cast<size_t>( token.GetLength() ) } ) );
        token = numbers.Tokenize( _T( "," ), start );
    }
    return buffer;
}

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Cannot convert CString to BYTE array

By : razeshzone

Date : March 29 2020, 07:55 AM

help you fix your problem Your CString is Unicode (two bytes per character) and you try to interpret it as ANSI (one byte per character). This leads to results you don't expect.
Instead of casting the underlying buffer into char* you need to convert the data. Use WideCharToMultiByte() for that.

How to convert from BYTE array to CString in MFC?

By : kuzulis

Date : March 29 2020, 07:55 AM

I hope this helps . How can I convert a BYTE array in a CString in MFC? , Try this - for eg: - If 'x' is your Byte array then -

code :

BYTE x[5]; 
x[0] = 'A'; 
x[1] = 0; 
x[2] = 'B'; 
x[3] = 'C'; 
x[4] = 0; 

CString str( (LPCSTR) &x, sizeof(x) );

How to correctly convert unsigned char to CString and once again, reversely convert to the result of CString to unsigned

By : Brandon Tao

Date : March 29 2020, 07:55 AM

To fix this issue Conversion to CString is pretty easy, just pass the unsigned char* to the c'tor. Conversion from CString to unsigned char* is a little more work, see below.

code :

unsigned char orig[] = "hello world";
std::cout << orig << " (unsigned char *)" << std::endl;

// Convert to a CString
CString cstring(orig);
std::cout << cstring << " (CString)" << std::endl;

// Convert to a unsigned char*
const size_t newsize = (cstring.GetLength() + 1);
unsigned char* nstring = new unsigned char[newsize];
strcpy_s((char*)nstring, newsize, cstring);
std::cout << nstring << " (unsigned char*)" << std::endl;

How to convert 2d np.array of lists of floats into a 2d np.array of floats, stacking the list values to rows

By : user3330945

Date : March 29 2020, 07:55 AM

will help you Author of the question here.
I found a slightly more elegant (and faster) way than filling the array one by one, which is:

code :

desired = np.array([np.concatenate([np.array(d) for d in lis]) for lis in current.T]).T
print(desired)
'''
[[0. 1.]
 [2. 4.]
 [3. 5.]]
 '''

Convert CString to character array?

By : afcustodioo

Date : March 29 2020, 07:55 AM

hop of those help? You use CString::GetBuffer() to get the TCHAR[] - the pointer to the buffer. If you compiled without UNICODE defined that's enough - TCHAR is same as char, otherwise you'll have to allocate a separate buffer and use WideCharToMultiByte() for conversion.