Question

以下是有效的：

type Individual [][]int
type Population []*Individual

我要做的是向人口添加一个字段，以便我执行以下操作

var p Population
p.Name = "human"

所以我尝试了这个：

type Individual [][]int
type Population struct {
     []*Individual
     Name string
}

但它对我不起作用。我该怎么做？

Answer 1

您应该声明结构字段的名称：

add_action( 'woocommerce_thankyou', 'the_tracking' );

function the_tracking( $order_id ) {

    global  $woocommerce;

    $order = wc_get_order( $order_id );
    $total = $order->get_total();
    $currency = get_woocommerce_currency();
    $subtotal = $woocommerce->cart->subtotal;
    $coupons = $order->get_used_coupons();
    $coupon_code = '';
    $discount = $order->get_total_discount();
    foreach ($coupons as $coupon){
        $coupon_code = $coupon;
    }
    $tracking = 'OrderID='.$order.'&ITEMx=[ItemSku]&AMTx=[AmountofItem]&QTYx=[Quantity]&CID=1529328&OID=[OID]&TYPE=385769&AMOUNT='. $total .'&DISCOUNT='. $discount .'&CURRENCY='. $currency .'&COUPON='. $coupon_code .'';
    echo $tracking;
 }

playground

package main

import (
    "fmt"
)

type Individual [][]int

type Population struct {
    Individual []*Individual // <- A name for field
    Name       string
}

func main() {
    var p Population
    p.Name = "human"
    fmt.Printf("%+v", p)
}

在Go中扩展未命名的类型

1 个答案: