This is a part of series on my quest to devour this book and share any interesting things that I didn’t know before:
This book is currently only available at Amazon. Singapore’s National Library only have its previous edition:
So C# 7.0 introduces new syntax sugar in if-else statement. Say we receive an object as a parameter for arithmetic operation. To prevent runtime error, we need to ensure that the parameter is an integer. The old way of doing this would be:
public static int someArithmeticOp(object o) {
try {
var i = (int) o;
// ..
// .. do the arithmetic ops here
//..
}
catch (Exception ex) {
throw;
}
}
With C# 7.0, we can do this:
public static int someArithmeticOp(object o) {
if (o is int i) {
// ..
// .. do the arithmetic ops here
//..
}
else {
// o is not integer, you can throw Exception, or doing other useful steps
throw new Exception("Invalid parameter");
}
}
About Hardono
Howdy! I'm Hardono. I am working as a Software Developer. I am working mostly in Windows, dealing with .NET, conversing in C#. But I know a bit of Linux, mainly because I need to keep this blog operational. I've been working in Logistics/Transport industry for more than 11 years.
