MESSAGE
| DATE | 2008-08-30 |
| FROM | Ruben Safir
|
| SUBJECT | Subject: [NYLXS - HANGOUT] Workshop C++ errors
|
error: passing `const Weight' as `this' argument of `float
Weight::wgt()' discards qualifiers
seems to be some sort of standard error format that I'm not
understanding.
I have code that looks like this
header file
class Weight{
public:
Weight();
explicit Weight(float wgt);
Weight(float wgt, const string &unit); Weight(string);
float operator=(const float w );
Weight& operator=(const Weight&);
//doesn't work - assignment needs a single argument
////float
operator=(const float wgt, const string &unit);
inline float wgt(){ return wgt_; };
float wgt(const float weight);
float wgt(const float weight, const string &unit); float
wgt(const
string &descr);
definition or class file
Weight& Weight::operator=(const Weight &fweight) {
//No choice but to hope it is in kilograms
unit_ = "kg";
wgt_ = fweight.wgt();
return this;
}
}
it all looks legal to me.
Ruben Safir
--
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