Error: element() may not be used with an empty list when create_lc = false

[oonisim]

Error

aws_autoscaling_group.this: element: element() may not be used with an empty list in:
${var.create_lc ? element(aws_launch_configuration.this.*.name, 0) : var.launch_configuration}

Cause

It appears that element() cannot be used for launch_configuration { count = 0 } for create_lc == false.

launch_configuration = "${var.create_lc ? element(aws_launch_configuration.this.*.name, 0) : var.launch_configuration}"

Workaround

35c35
<   launch_configuration = "${var.create_lc ? element(aws_launch_configuration.this.*.name, 0) : var.launch_configuration}"
---
>   launch_configuration = "${var.create_lc ?  element(concat(aws_launch_configuration.this.*.name, list("")), 0) : var.launch_configuration}"
77c77
<     lc_name = "${var.create_lc ? element(aws_launch_configuration.this.*.name, 0) : var.launch_configuration}"
---
>     lc_name = "${var.create_lc ? element(concat(aws_launch_configuration.this.*.name, list("")), 0) : var.launch_configuration}"

[oonisim]

Kindly provide an example code for the use case of create_lc == false. For cases where create_lc == true, there are two examples provided.

[antonbabenko]

Example code added. Thanks @oonisim !

v2.8.0 has been released.

[oonisim]

Thanks a lot!

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