Hi, In fact, you're almost there. You only need to add lifetime annotations on `Sprite` in the intermediate HashMap variable and in return type. See here: https://gist.github.com/dpx-infinity/8516387
I tried to emulate rust-sfml types. This gist compiles, and the test is successful. BTW, you don't have to write `return` unless you want to exit early, for example, from inside a loop. Just leave out semicolon at the last line. Simple hint to detect mistakes in lifetime annotations: if you only have lifetime annotations on parameters or return values but not on both parameters and return values, then it is likely that something is wrong. 2014/1/20 benjamin adamson <adamson.benja...@gmail.com>: > Hi all! > > I having a little trouble resolving this issue on my own, and I think it's > an issue of syntax, not so much comprehending life times. > > What I'm doing is, using the RSFML library to try and write a pong clone in > rust. So far it's been going awesome! I'm running into a small problem with > lifetimes though. To give some context, SFML separates textures from > sprites, and sprites can be created with a borrowed pointer to a texture. I > first load all the textures into a HashMap, and pass that hashmap to a > function which (is supposed to) will return a HashMap of Sprites. These > sprites I would like to initialize inside the function with references to > the textures in the input HashMap of textures. > > Based on my understanding of borrowed pointers, this should be able to work. > In fact, I wrote a simpler version of my function just to make sure I > understand what I am not understanding. I wrote a version of the function > which takes the same HashMap of textures, and returns a single sprite (not a > hashmap). The single sprite is created with a reference to the first texture > in the hashmap. I was able to figure out the syntax to express this. However > I can't seem to figure out the syntax for the more complicated case, > returning the hashmap of Sprites. > > I created a gist for easy viewing of the code I am having trouble with, and > I think I've made it very obvious what's happening in the gist link, > hopefully somebody can help me sort this out :D > https://gist.github.com/ShortStomp/8513368 > > also the link to the full file, if it helps. > https://github.com/ShortStomp/pong-rust/blob/master/main.rs > > Thanks in advance!! > > _______________________________________________ > Rust-dev mailing list > Rust-dev@mozilla.org > https://mail.mozilla.org/listinfo/rust-dev > _______________________________________________ Rust-dev mailing list Rust-dev@mozilla.org https://mail.mozilla.org/listinfo/rust-dev
