check the syntax of a ruby variable , including that it 's longer than zero characters , and starts with either an @ or a capital letter . concode_field_sep PlaceHolder placeHolder concode_field_sep boolean isInstanceVariable concode_elem_sep boolean isNameCharacter19 concode_elem_sep boolean isInitialCharacter concode_elem_sep boolean isValidConstantName19 concode_elem_sep boolean isValidInstanceVariableName concode_elem_sep boolean isValidConstantName concode_elem_sep boolean isValidClassVariableName concode_elem_sep boolean isPredicate concode_elem_sep boolean isLocal concode_elem_sep boolean isAttrSet concode_elem_sep boolean isConstant concode_elem_sep boolean isNameString concode_elem_sep boolean isClassVariable concode_elem_sep boolean isSpecial concode_elem_sep boolean isNameString19 concode_elem_sep boolean isNameCharacter concode_elem_sep boolean isGlobal
boolean function ( String arg0 ) { char loc0 ; return arg0 . length ( ) > 0 && ( ( loc0 = arg0 . charAt ( 0 ) ) == '@' || ( loc0 <= 'Z' && loc0 >= 'A' ) ) ; }