Arrays

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Summary

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• What is an array?

• Declaring arrays

• Accessing values

What is an array?

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A static array is a statically allocated memory buffer containing values that can be accessed using indexes. Indexes are translated into offsets in the buffer using the following formula: offset = index * element_size.

Declaring arrays

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In Shard, you can declare static arrays using the following syntax:

var array: [10]i32;         // empty array
var array2: [10]i32 = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9;

As you can see, we are using an array type to create an array of type i32 (each element in the array must have this type) and of length 10.

Separate values with a comma (,) to initialize an array.

Accessing values

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To get a value at a specific position in an array, you need to access it using its index (position) in the array. For example:

const val1: i32 = array[5];

Note: the first index is 0, not 1.