createCaseFirst function
Implementation
Function createCaseFirst(String methodName) {
return (String string) {
List<String> strSymbols = hasUnicode(string) ? stringToArray(string) : [];
String chr = strSymbols.isNotEmpty ? strSymbols[0] : string[0];
var trailing = strSymbols.isNotEmpty
? castSlice(strSymbols, 1).join('')
: string.substring(1);
if (methodName == 'toUpperCase') {
return chr.toUpperCase() + trailing;
} else if (methodName == 'toLowerCase') {
return chr.toLowerCase() + trailing;
}
};
}