[chore] bump go structr cache version -> v0.6.0 (#2773)

* update go-structr library -> v0.6.0, add necessary wrapping types + code changes to support these changes

* update readme with go-structr package changes

* improved wrapping of the SliceCache type

* add code comments for the cache wrapper types

* remove test.out :innocent:

---------

Co-authored-by: tobi <31960611+tsmethurst@users.noreply.github.com>

1 files changed, 0 insertions, 78 deletions

diff --git a/vendor/codeberg.org/gruf/go-structr/result.go b/vendor/codeberg.org/gruf/go-structr/result.go
deleted file mode 100644
index 08d3ad013..000000000
--- a/vendor/codeberg.org/gruf/go-structr/result.go
+++ /dev/null
@@ -1,78 +0,0 @@
-package structr
-
-import (
-	"sync"
-	"unsafe"
-)
-
-var result_pool sync.Pool
-
-type result struct {
-	// linked list elem this result is
-	// stored under in Cache.lruList.
-	elem list_elem
-
-	// indexed stores the indices
-	// this result is stored under.
-	indexed []*index_entry
-
-	// cached data (we maintain
-	// the type data here using
-	// an interface as any one
-	// instance can be T / error).
-	data interface{}
-}
-
-func result_acquire[T any](c *Cache[T]) *result {
-	// Acquire from pool.
-	v := result_pool.Get()
-	if v == nil {
-		v = new(result)
-	}
-
-	// Cast result value.
-	res := v.(*result)
-
-	// Push result elem to front of LRU list.
-	list_push_front(&c.lruList, &res.elem)
-	res.elem.data = unsafe.Pointer(res)
-
-	return res
-}
-
-func result_release[T any](c *Cache[T], res *result) {
-	// Remove result elem from LRU list.
-	list_remove(&c.lruList, &res.elem)
-	res.elem.data = nil
-
-	// Reset all result fields.
-	res.indexed = res.indexed[:0]
-	res.data = nil
-
-	// Release to pool.
-	result_pool.Put(res)
-}
-
-func result_drop_index[T any](res *result, index *Index[T]) {
-	for i := 0; i < len(res.indexed); i++ {
-
-		if res.indexed[i].index != unsafe.Pointer(index) {
-			// Prof. Obiwan:
-			// this is not the index
-			// we are looking for.
-			continue
-		}
-
-		// Get index entry ptr.
-		entry := res.indexed[i]
-
-		// Move all index entries down + reslice.
-		copy(res.indexed[i:], res.indexed[i+1:])
-		res.indexed = res.indexed[:len(res.indexed)-1]
-
-		// Release to memory pool.
-		index_entry_release(entry)
-
-		return
-	}
-}