How to add an if statement to a struct initialization - if-statement

Question

I'm trying to add an if statement in a nested struct, and whenever I try to build I get: syntax error: unexpected if, expecting expression.
I've found a simple code that shows what i'm trying to do:
package main
import "fmt"
type Salary struct {
Basic, HRA, TA float64
}
type Employee struct {
FirstName, LastName, Email string
Age int
MonthlySalary []Salary
}
func main() {
e := Employee{
FirstName: "Mark",
LastName: "Jones",
Email: "mark#gmail.com",
Age: 25,
MonthlySalary: []Salary{
Salary{
Basic: 15000.00,
HRA: 5000.00,
TA: 2000.00,
},
Salary{ //i want to add a condition "if true" then add this salary struct
Basic: 16000.00,
HRA: 5000.00,
TA: 2100.00,
}, // till here
Salary{
Basic: 17000.00,
HRA: 5000.00,
TA: 2200.00,
},
},
}
And I found that this might be done through preprocessor, which I'm totally clueless about.
Please note that the struct is imported from another package on my original code and I can't change the way it's declared and used.

Answer 1

You cannot put logic inline in a struct. You must do it outside of the variable declaration. But this is easy. For example:
func main() {
// Initialize a slice of `salaries` with the first
// value you know you need.
salaries := []Salary{
{
Basic: 15000.00,
HRA: 5000.00,
TA: 2000.00,
},
}
if /* your condition */ {
// conditionally add the second one
salaries = append(salaries, Salary{
Basic: 16000.00,
HRA: 5000.00,
TA: 2100.00,
})
}
// And finally add the last one
salaries = append(salaries, Salary{
Basic: 17000.00,
HRA: 5000.00,
TA: 2200.00,
})
e := Employee{
FirstName: "Mark",
LastName: "Jones",
Email: "mark#gmail.com",
Age: 25,
// And here include them in the variable declaration
MonthlySalary: salaries,
}