How Can I Convert a Go []int Array to a Delimited String in One Line?

One-Liner to Convert []int to String with Custom Delimeter

In this code challenge, we seek to transform an array of integers, such as []int{1, 2, 3}, into a delimited string, for instance, "1, 2, 3". The customized delimiter may vary based on specific requirements, like a comma (',') or space (' ').

While traditional solutions in programming languages like Python and Go provide ways to concatenate strings, they often assume the underlying array is already of type []string. This limitation prompts developers to find one-liners that seamlessly convert []int to the desired format.

To address this challenge, we present three succinct options that leverage the inherent power of Go's standard library:

These one-liners function by manipulating the representation of an integer array as a string. Here's a breakdown of the steps involved:

1. fmt.Sprint(a): Transforms the integer array a into a string representation. The resulting string appears as a slice of numbers enclosed in square brackets, e.g., "[1 2 3]".
2. strings.Replace: Exchanges spaces (' ') within the string with the specified delimiter. This step introduces the desired separation between integer values.
3. strings.Trim: Removes the left and right square brackets ("[]") from the resulting string. The result is a comma-separated string (or any other customized delimiter) representing the original integer array.

For instance, employing the code with []int{1, 2, 3} and a comma delimiter ',':

These one-liners provide a concise and effective solution for converting integer arrays to delimited strings in Go, offering flexibility in selecting the desired separator.

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