So i have a member field of the aforementioned type, do I need to clone the key of an object when invoking put?
#Do I need to clone a string when using `StringArrayHashMap`?
sinful sandal
sinful sandal
sure, but idk what more context do you need tho
var documents = std.StringArrayHashMap(TextDocument).init(allocator);
documents.put(somestring, value);
somestring gets defer freed later on
and documents outlive it
cerulean phoenix
sure, but idk what more context do you need tho
```
var documents = std.String...
bruh, the string may be comptime known or stack allocated or heap allocated
choose one
sinful sandal
bruh, the string may be comptime known or stack allocated or heap allocated
the string is heap allocated
cerulean phoenix
the string is heap allocated
no you don't need to dupe it
sinful sandal
but it gets freed tho? and outlives documents?
cerulean phoenix
but it gets freed tho? and outlives `documents`?
it needs to be freed as documents is freed
sinful sandal
it needs to be freed as documents is freed
that's the problem, they don't have the same lifetimes
cerulean phoenix
that's the problem, they don't have the same lifetimes
ok then dupe it
polar ember
std.StringArrayHashMap doesn't alloc/free keys for you, it's just a wrapper over ArrayHashMap that gives a hash function for strings. When in doubt, check the source code:
https://github.com/ziglang/zig/blob/89942ebd03b2943cbbe84b575a024e156ca5bf52/lib/std/array_hash_map.zig#L27
misty pilot
If the strings live for more than the map already then you don't need to dupe
golden olive
The hash map doesn't manage the lifetime of its keys, no.
You're meant to be able to decide the lifetimes of these things yourself, and thus, the key needs to remain valid while it's being used as a key in the map.
polar ember
depends on if the map outlived the key or if the key outlives the map?
polar ember
and `documents` outlive it
here OP says map outlives key
polar ember
but it gets freed tho? and outlives `documents`?
here OP says key outlives map