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Is it logical to check the null values in the injected arguments?
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Is it logical to check the null values in the injected arguments?
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I am using unity in my application. Does it make sense to check for null values in the constructor for the injected values?
public class ExampleClass
{
public ExampleClass(IExampleArgument e)
{
if (e == null)
//Do something
}
}
Shouldn't the argument be resolved already and bound to a value? and in case a problem happen, it should occur during resolving, so I either have a value here or I don't?
Does it make sense to check for null values in the constructor for the injected values?
Absolutely.
Shouldn't the argument be resolved already and bound to a value?
There's nothing forcing clients to use injection - it would be perfectly valid syntactically to call your constructor with a null value. I'm assuming that a null value would cause a problem later in the program, so you decide - do you want to handle the [problem in that constructor or let it occur naturally later in the program?
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