woocommerce_shipping_calculator_enable_city filter-hook . WC 1.0

Usage

add_filter( 'woocommerce_shipping_calculator_enable_city', 'filter_function_name_2457' );
function filter_function_name_2457( $true ){
	// filter...

	return $true;
}

$true

-

Where the hook is called

<?php if ( apply_filters( 'woocommerce_shipping_calculator_enable_city', true ) ) : ?>

Where in WP core the hook is used WooCommerce