{"id":58472,"library":"block2","title":"Block2","description":"Provides Rust bindings for Apple's C language extension of blocks, enabling closure-like functionality.","status":"active","version":"0.6.2","language":"rust","source_language":null,"source_url":"https://github.com/madsmtm/objc2","tags":["apple","blocks","ffi","objective-c"],"install":[{"cmd":"# Cargo.toml\n[dependencies]\nblock2 = \"0.6.2\"","lang":"toml","label":"Cargo.toml"},{"cmd":"cargo add block2","lang":"bash","label":"cargo add"}],"dependencies":[],"imports":[{"symbol":"Block","correct":"use block2::Block;"}],"quickstart":{"code":"use block2::Block;\n\nfn main() {\n    let block = Block::new(|| println!(\"Hello from block!\"));\n    block.call();\n}","lang":"rust","description":"Create and call a simple block."},"warnings":[{"fix":"Use nightly Rust or ensure you are targeting an Apple platform with blocks support.","message":"Requires nightly Rust or specific target features for Apple platforms.","severity":"gotcha","affected_versions":">=0.6.0"}],"env_vars":null,"search_vec":"'appl':6,18 'bind':4 'block':12,19 'block2':1 'c':8,23 'closur':15 'closure-lik':14 'enabl':13 'extens':10 'ffi':20 'function':17 'languag':9 'like':16 'object':22 'objective-c':21 'provid':2 'rust':3","created_at":"2026-06-16T16:25:14.423640+00:00","updated_at":"2026-06-16T16:25:14.423640+00:00","problems":[],"ecosystem":"crates","meta_description":null,"install_score":null,"quickstart_score":null,"quickstart_tag":null,"pypi_latest":null,"cli_name":null,"cli_version":null,"type":"library","homepage":"https://github.com/madsmtm/objc2","github":"https://github.com/madsmtm/objc2","docs":"https://docs.rs/block2/","changelog":null,"pypi":null,"npm":null,"openapi_spec":null,"status_page":null,"smithery":null,"categories":["ffi","utility"],"base_url":null,"auth_type":null,"provenance":{"verified_status":null,"verified_at":null,"last_verified":"2026-06-16","next_check":"2026-12-13","install_tag":null}}