// https://doc.rust-lang.org/std/collections/struct.HashMap.html #define i_implement #include #define i_key_str #define i_val_str #include // Type inference lets us omit an explicit type signature (which // would be `HashMap` in this example). int main(void) { cmap_str book_reviews = {0}; // Review some books. cmap_str_emplace(&book_reviews, "Adventures of Huckleberry Finn", "My favorite book." ); cmap_str_emplace(&book_reviews, "Grimms' Fairy Tales", "Masterpiece." ); cmap_str_emplace(&book_reviews, "Pride and Prejudice", "Very enjoyable" ); cmap_str_insert(&book_reviews, cstr_lit("The Adventures of Sherlock Holmes"), cstr_lit("Eye lyked it alot.") ); // Check for a specific one. // When collections store owned values (String), they can still be // queried using references (&str). if (cmap_str_contains(&book_reviews, "Les Misérables")) { printf("We've got %" c_ZI " reviews, but Les Misérables ain't one.", cmap_str_size(&book_reviews)); } // oops, this review has a lot of spelling mistakes, let's delete it. cmap_str_erase(&book_reviews, "The Adventures of Sherlock Holmes"); // Look up the values associated with some keys. const char* to_find[] = {"Pride and Prejudice", "Alice's Adventure in Wonderland"}; c_forrange (i, c_arraylen(to_find)) { const cmap_str_value* b = cmap_str_get(&book_reviews, to_find[i]); if (b) printf("%s: %s\n", cstr_str(&b->first), cstr_str(&b->second)); else printf("%s is unreviewed.\n", to_find[i]); } // Look up the value for a key (will panic if the key is not found). printf("Review for Jane: %s\n", cstr_str(cmap_str_at(&book_reviews, "Pride and Prejudice"))); // Iterate over everything. c_forpair (book, review, cmap_str, book_reviews) { printf("%s: \"%s\"\n", cstr_str(_.book), cstr_str(_.review)); } cmap_str_drop(&book_reviews); }