-(NSDictionary *)sanitizedFinancialLine:(NSDictionary *)theFinancialLine
{
NSMutableDictionary *aFinancialLine = [NSMutableDictionary dictionaryWithDictionary:theFinancialLine];
for (id key in [aFinancialLine allKeys]) {
id something = [aFinancialLine objectForKey:key];
if ([something responds
当我执行下面的代码时,我得到了错误"player_normal_defense没有定义“。我知道问题是什么了,但如果我必须在define函数中定义变量,它将完全没有意义,因为该变量存储了初始防御值以供进一步使用。我该如何解决这个问题? import random
import sys
import os
import time
from Entity import *
class Battle():
def Attack(self, attacker, defender):
damage = attacker.atk - defender.dif
我刚刚阅读了有效的java规则第39条(防御性拷贝)。没有明确告知,每次数据事务都应该发生两次复制,以遵循此规则。下面是我想的示例代码。这似乎有点多余。我理解得对吗?还有更好的办法吗?
public class SomeClass {
private MyData myData;
SomeClass() {
myData = new MyData("1");
}
public MyData getData() {
return new MyData(myData); // 1st Copy of data