WordPress at a glance
filter is not described

woocommerce_attribute_default_visibility filter-hook . WC 1.0

Usage

add_filter( 'woocommerce_attribute_default_visibility', 'filter_function_name_902' );
function filter_function_name_902( $1 ){
	// filter...

	return $1;
}
$1
-

Where the hook is called

WC_AJAX::add_attribute()
woocommerce_attribute_default_visibility
woocommerce/includes/class-wc-ajax.php 578
$attribute->set_visible( apply_filters( 'woocommerce_attribute_default_visibility', 1 ) );

Where in WP core the hook is used WooCommerce

Usage not found.