`SharedCache` option causes compilation error

[haydnv]

Hi @dermesser, thank you for this super useful crate! I'm trying to use the SharedCache option like so:

#[memoize(SharedCache)
fn my_function(arg: &'static str) -> Result<Struct, Error> {
   /// ...
}

But when I try to compile this I get:

$ cargo test --features=all
   Compiling ha-ndarray v0.2.0 (/.../ha-ndarray)
error[E0599]: no method named `with` found for struct `MEMOIZED_MAPPING_READ_SLICE` in the current scope
  --> src/opencl/programs/slice.rs:65:1
   |
65 | #[memoize(SharedCache, Capacity: 1024)]
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   | |
   | method `with` not found for this struct
   | method not found in `MEMOIZED_MAPPING_READ_SLICE`

This is on version 0.4.1. Do you have any ideas about what might be going on?

[dermesser]

use memoize::memoize;

#[derive(Clone)]
struct Struct {}
#[derive(Clone)]
struct Error {}

#[memoize(SharedCache, Capacity: 1024)]
fn my_function(arg: &'static str) -> Result<Struct, Error> {
    println!("{}", arg);
    Ok(Struct{})
}

fn main() {
    let s = "Hello World";
    my_function(s).ok();
}

I tried this, and it works:

$ cargo run --example issue30
   Compiling memoize v0.4.1 (/home/lbo/dev/rust/memoize)
    Finished dev [unoptimized + debuginfo] target(s) in 0.17s
     Running `target/debug/examples/issue30`
Hello World

I notice that the symbol which can't be found is upper-cased, but I think current versions use a lower-case version. Can you double check the versions maybe? Otherwise I don't know much right now

[haydnv]

I'm definitely using memoize version 0.4.1 with rustc version 1.74.0. Here's the version tree for memoize in case it's helpful:

memoize v0.4.1
│   ├── lazy_static v1.4.0
│   ├── lru v0.7.8
│   │   └── hashbrown v0.12.3
│   │       └── ahash v0.7.7
│   │           ├── getrandom v0.2.11
│   │           │   ├── cfg-if v1.0.0
│   │           │   └── libc v0.2.150
│   │           └── once_cell v1.18.0
│   │           [build-dependencies]
│   │           └── version_check v0.9.4
│   └── memoize-inner v0.4.0 (proc-macro)
│       ├── lazy_static v1.4.0
│       ├── proc-macro2 v1.0.70
│       │   └── unicode-ident v1.0.12
│       ├── quote v1.0.33
│       │   └── proc-macro2 v1.0.70 (*)
│       └── syn v1.0.109
│           ├── proc-macro2 v1.0.70 (*)
│           ├── quote v1.0.33 (*)
│           └── unicode-ident v1.0.12

[Azkellas]

I'm reporting the same issue on a new project with only memoize and the sample code provided above, both with nightly 1.76.0 and stable 1.74.0.

Here's my version tree:

memoizetest v0.1.0
└── memoize v0.4.1
    ├── lazy_static v1.4.0
    ├── lru v0.7.8
    │   └── hashbrown v0.12.3
    │       └── ahash v0.7.7
    │           ├── getrandom v0.2.11
    │           │   └── cfg-if v1.0.0
    │           └── once_cell v1.19.0
    │           [build-dependencies]
    │           └── version_check v0.9.4
    └── memoize-inner v0.4.0 (proc-macro)
        ├── lazy_static v1.4.0
        ├── proc-macro2 v1.0.70
        │   └── unicode-ident v1.0.12
        ├── quote v1.0.33
        │   └── proc-macro2 v1.0.70 (*)
        └── syn v1.0.109
            ├── proc-macro2 v1.0.70 (*)
            ├── quote v1.0.33 (*)
            └── unicode-ident v1.0.12

[ericswpark]

Same issue here, turning on SharedCache results in a compile error. Here's my code in case more test cases are needed (spoilers for this year's Advent of Code day 12, if anyone is participating):

https://github.com/ericswpark/advent-of-code-solutions/blob/69696240b63faede3016dfb9f55afa3ab29a1e32/2023/day-12/src/main.rs#L122

[WillLillis]

I also ran into this issue while trying to solve Advent of Code Day 12. I tried building with stable 1.74.0 and 1.74.1, and nightly 1.76.

Here's my code, although fair warning it's a bit of a mess.

https://github.com/WillLillis/advent_of_code/blob/52b27533f90130efefde39d52f8655c41093a5cc/advent_of_code_2023/day_12/part_2/src/main.rs#L154

EDIT: Pulling the crate from the github repo fixed the problem :) cargo add --git https://github.com/dermesser/memoize memoize --features full