Onetastic Macro Documentation > Concepts > Arrays

Arrays

Variables can store a single value or a set of values. Variables that store a set of values are of Array data type. Arrays can store an unbounded amount of <key, value> pairs. The values are always accessed by providing the key (known as index). New elements can be added to arrays by assignment and specifying the a key that doesn't exist in the array:

Creating Arrays

Arrays can also be created by Array function by simply providing the list of elements:

Here the indices are autmatically assigned as 0, 1, 2

Iterating over Array Elements

Values in the array can be iterated over using foreach statements

Array keys are of string or numeric types and they don't have to follow any order.

Array functions

There are a several functions that generate and consume arrays. QueryObjects and QueryText functions return arrays of objects. String_Split function splits a given string into an array of strings, while Array_Join function reverses this. Array_Length function will return the number of elements in an array.

Using an array as a stack or a queue

Array_PopFront and Array_PushBack functions can be used as equivalents of dequeue and enqueue operations on a queue data structure. Similarly Array_PushBack and Array_PopBack functions allow an array to be used as a stack, providing simple push/pop functionality. Finally there is an Array_PushFront function to insert an element at the beginning of an array.

Multi-dimensional Arrays

Arrays can be multi-dimensional if they contain other arrays: