How to Fix \"Cannot convert (untyped string constant) to *string\" Error When Passing Strings to Functions in Go?

Passing String Values to Function Parameters

The error message "Cannot convert (untyped string constant) to *string [duplicate]" indicates an issue when attempting to pass a string constant as an argument to a function that expects a pointer to a string.

To resolve this, you need to store the string constant in a variable and then pass the address of that variable to the function. Here's how you can modify the code to fix the error:

<code class="go">persistentvolumeclaim := &apiv1.PersistentVolumeClaim{
    ObjectMeta: metav1.ObjectMeta{
        Name: "mysql-pv-claim",
    },
    Spec: apiv1.PersistentVolumeClaimSpec{
        StorageClassName: func(str string) *string { return &str }("manual"),
        },
}</code>

In this code, we create a function that takes a string parameter and returns a pointer to that string. We then call this function and pass the string constant "manual" as the argument. The returned pointer is then assigned to the StorageClassName field of the apiv1.PersistentVolumeClaim object.

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