c++ - QChar get digit value if `isDigit()` -

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how digits value elegantly?

qchar qc('4'); int val=-1; if(qc.isdigit()){    val = qc.tolatin1() - '0'; }

does not good.

neither converting qstring since creating qstring object , start parsing purpose seems overkill.

qchar qc('4'); int val=-1; if(qc.isdigit()){    val = qstring(qc).toint(); }

any better options or interfaces have missed?

there method int qchar::digitvalue() const which:

returns numeric value of digit, or -1 if character not digit.

so, can write:

qchar qc('4'); int val = qc.digitvalue();




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