To use associative arrays in shell scripting, you need to declare them with the declare -A command, followed by the name of the array. For example, declare -A colors declares an associative array ...

Figure 3: This is how you declare a multi-dimensional array. What if I wanted to retrieve a value from the array? Well, the key to doing so is to understand that the rows and columns are numbered.

In PowerShell, the index numbers start at 0, meaning that the first item in the array has an index of 0, the second item has an index of 1, and so on. You can also use negative index numbers to access ...

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These arrays employ numeric values — 1, 2, 3 and so on — as their indices. Since most scripting and programming languages start indexed arrays with element 0, we have done so in the examples ...