guys ı cant get out of this .can you check and infor me about the place where ı should put null check . this for sharing the post for formality.ı didnt wanna determine the name age and salaray below.
class _Employee {
String? empName;
int? empAge;
int? empSalary;
String get employeeName {
return empName!;
}
void set employeeName(String name) {
this.empName = name;
}
void set employeeAge(int age) {
if (age == null) {
print("please give a number");
} else if (age <= 18) {
print("please give a value number");
this.empAge = age;
}
}
int get employeeAge {
return empAge!;
}
void set employeeSalary(int salary) {
salary <= 0
? print("Salary cannot be less than 0")
: this.empSalary = salary;
}
int get employeeSalary {
return empSalary!;
}
}
void main() {
_Employee emp = _Employee();
emp.employeeName;
emp.employeeAge;
emp.employeeSalary;
print("Employee's Name is : ${emp.employeeName}");
print("Employee's Age is : ${emp.employeeAge}");
print("Employee's Salary is : ${emp.employeeSalary}");
}
CodePudding user response:
You can change the return dataType to nullable, instead of focing with null-assert!
.
String? get employeeName {
return empName;
}
Or you can return default value on null case.
String get employeeName {
return empName ?? "Got null on empName";
}
You need to set value like
emp.employeeName = "Test";
Full snippet can be
class _Employee {
String? empName;
int? empAge;
int? empSalary;
String get employeeName {
return empName ?? "Got null on empName";
}
set employeeName(String name) {
empName = name;
}
set employeeAge(int? age) {
if (age == null) {
print("please give a number");
} else if (age <= 18) {
print("please give a value number");
empAge = age;
}
}
int get employeeAge {
return empAge ?? 0;
}
set employeeSalary(int salary) {
salary <= 0 ? print("Salary cannot be less than 0") : empSalary = salary;
}
int get employeeSalary {
return empSalary ?? 0;
}
}
void main() {
_Employee emp = _Employee();
emp.employeeName = "Test";
emp.employeeAge = 12;
emp.employeeSalary;
print("Employee's Name is : ${emp.employeeName}");
print("Employee's Age is : ${emp.employeeAge}");
print("Employee's Salary is : ${emp.employeeSalary}");
}
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