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Index

• func Merge(dst, src any)

Functions

func Merge

func Merge(dst, src any)

Merge copies non-zero fields from src into dst recursively.

dst and src must have the same concrete type (or identical field layout for structs). Mismatched types will cause a panic.

For each field in src:

• Pointers: copied if non-nil (the pointed-to value is NOT inspected)
• Interfaces: copied if non-nil
• Strings: copied if non-empty
• Numbers: copied if non-zero
• Bools: ALWAYS copied (use *bool for optional bools)
• Slices/maps: replaced if non-empty (element-level merging is NOT performed)
• Structs: merged field-by-field recursively
• Channels/funcs/arrays/unsafe pointers: intentionally skipped

Unexported struct fields are skipped.

dst must be a non-nil pointer to a struct. src must be a struct or pointer to struct. Either constraint violation causes Merge to panic.