C＃：条件语句中一个变量的两次比较的更好语法

Question

Is there a short hand method for handling a two comparisons in a conditional statement?

For example:

if(ReturnedCount > 0 && ReturnedCount < 50)
{
    ...
}

I'm fairly certain that a variable must always be on the left hand side of an operator because when I tried the following it didn't work:

if(0 < ReturnedCount < 50)
{
    ...
}

I did a search on google for the c# equivalent of the between keyword in SQL and got no good results.

Is there a better way to handle this sort of double comparison for the same variable?

Answer 1

Short answer, C# doesn't have any syntax sugar to help, each conditional test just gets added on to the statement.

At some point, when it starts getting hard to read, you can break it out into a method call that returns true/false.

ie.

if (Pred.Equals( a, b, c, d ))
{ ... }

Where, Pred is a (non existant) static class containing helper methods to be used as logical predicates.

Alternately...

A second approach to this is chaining method calls to represent consecutive conditional tests.

ie.

if (a.GreaterThan(b).LessThan(c).IsTrue())
{...}

Where, GreaterThan and LessThan are extension methods which return either the 'this' value or 'null', and IsTrue returns true if 'this' is non-null.

Those are the only two techniques I've come across myself, goodluck!