Compiler warnings

The Small language has 24 warning messages, although only 3 turn up regularly. Even though they are only warnings, you should correct them as they will confuse n00bs compiling them for the first time. More importantly they may indicate a logic error in your code.

215 expression has no effect

This usually means you have a logic error in your code - using == where you mean = will cause this, among other things.

217 loose indentation

This means you have not indented your code properly. If your code looks indented properly, it may be because you have a mixture of tabs and spaces in front of your code. This also often turns up when you have mismatched brackets (more on that later).

219 local variable identifier shadows a symbol at a preceding level

This occurs when you define two variables with the same name either within the same function, or one within a function and one being a global variable. It also occurs if you give a local variable the same name as the function it is in.

A complete list of compiler warnings is available in The Small Manual.