Statement Lists

A Tab key can be used to indent a statement.

Tidy programs have statement blocks indented by one tab.

If a for loop needs to repeat a single statement only, a statement list can be used instead of a statement block.

A statement list begins with a colon (:) symbol.

Statement lists are a feature of ZedLX. They are not available in most other programming languages.

Statements of a statement list must be separated by colon (:) symbols. A semicolon (;) symbol ends a statement list.

A statement list can contain many plain statements. The last statement of a statement list can be any statement.

Plain statements are statements that must always be ended by a semicolon (;) or colon (:) symbol. A println statement is a plain statement.

A for statement is not a plain statement, because it can end with a statement block.

Here is the same program written in a disorderly manner.

Why doesn't this code make a pause on each iteration?

for #i=1..20
	: println i*i  << NOT ended by semicolon
	: sleepMs(200);

The text between symbols /* and */ is called a multiline comment. A multiline comment can span multiple lines.

Exercise:

Rewrite this demonstrational program so that a statement list is used instead of the statement block.