Function magnus::block::block_given

pub fn block_given() -> bool

Returns whether a Ruby block has been supplied to the current method.

Panics

Panics if called from a non-Ruby thread. See Ruby::block_given for the non-panicking version.

Examples

use magnus::{block::block_given, define_global_function, function, rb_assert};

fn got_block() -> bool {
    block_given()
}

define_global_function("got_block?", function!(got_block, 0));

rb_assert!("got_block? {} == true");
rb_assert!("got_block? == false");