An array is one of the types of TRIK Studio language that stores a set of values ​​(array elements) identified by an index. The numbering of indices in the array starts at 0.

Arrays can be created explicitly using the following expressions (the next lines are equivalent):

a = {1; 2; 3; 4};
a = {1, 2, 3, 4};

Or with explicit indices:

a = {[0] = 1, [10] = 2, [20] = 3};

You can use arrays without creating them. For example, like this:

a[1] = 1;
a[2] = 2;

In this case, "empty spaces" in the array (indices that did not have an explicit assignment) will be filled with default values:

• 0 — for real and integer;

• false — for boolean;

• empty lines for arrays of strings.

Array values ​​can also be used without curly braces if used as the return value. For example, this expression will return an array of numbers 1 and 2:

a = 1;
b = 2;
a, b 

This is implemented in order to interpret the enumerations of values ​​(for example, the ports of motors in the block "Motors forward") as arrays. Therefore, wherever you use a comma-separated value notation, you can use an array.

Unlike Lua, the TRIK Studio language is statically-typed, that is, the type of each expression and each variable must be known at compile time. Moreover, the language does not require (and does not even allow!) to explicitly write the types of variables. It uses automatic type inference for the use of variables.

For example, environment "understands" from the expression a = 1 that type of a is integer.

See the article about the syntax of expressions in blocks: