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msg_send_t

apple_objc_sys

Macro msg_send_t 

Source 
macro_rules! msg_send_t {
    [$t:ty; $obj:expr, $sel:ident] => { ... };
    [$t:ty; $obj:expr, $($sel:ident : $arg:expr),+ $(,)?] => { ... };
    (@call $t:ty; $obj:expr, $sel:expr, $a1:expr) => { ... };
    (@call $t:ty; $obj:expr, $sel:expr, $a1:expr, $a2:expr) => { ... };
    (@call $t:ty; $obj:expr, $sel:expr, $a1:expr, $a2:expr, $a3:expr) => { ... };
    (@call $t:ty; $obj:expr, $sel:expr, $a1:expr, $a2:expr, $a3:expr, $a4:expr) => { ... };
}
Expand description

Send an ObjC message that returns a typed non-Id value (bool, isize, f64, etc.).

ⓘ
let count: isize = msg_send_t![info, processorCount];
let ok: bool = msg_send_t![mgr, fileExistsAtPath: path];