Local variables or direct statements?

Question

I am currently studying C# and I really want to get a good coding style from the beginning, so I would like to hear opinions from you professionals on this matter.

Shoul

Answer 1

I suggest you use a local variable like here:

bool parseSuccess = double.TryParse(stringToParse, out dblValue);
if (parseSuccess) ...

For two reasons:

1. You can use more times the variable without parse your double another time.

2. It makes the code more readable.

Consider this:

if(double.TryParse(string1, out Value1) && double.TryParse(string2, out Value2) && double.TryParse(string3, out Value3) && double.TryParse(string4, out Value4))
{
    //some stuff
}

It's too long and it makes the code hard to be read. So sometimes local variabels make the code a lot more readable.