我的下面有div
div
我想要做的是,替换“bid_currencycode”= 4;由不同的值。我想用5替换4.我怎么能这样做?请有人帮助我。
谢谢
答案 0 :(得分:3)
您可以使用以下代码执行相同的操作:
def find_last(s):
temp = list(enumerate(s))
temp.reverse()
for pos, chr in temp:
try:
return(pos, int(chr))
except ValueError:
continue
下面:
// Getting the dictionary from your array and making it to a mutable copy
NSMutableDictionary *dict = [yourArray[index] mutableCopy];
// Changing the specified key
[dict setObject:@(5) forKey:@"bid_currencycode"];
// Replacing the current dictionary with modified one
[yourArray replaceObjectAtIndex:index withObject:dict];
是yourArray
NSMutableArray
是一个有效的索引(对象的索引,您需要更改该值)答案 1 :(得分:1)
参考以下编码
NSMutableDictionary *dict =[[NSMutableDictionary alloc]init];
//your array
dic =[yourArray objectAtIndex:0];
[dict removeObjectForKey:@"bid_currencycode"];
[dict setObject:@“5” forKey:@"bid_currencycode"];
[yourArray replaceObjectAtIndex:0 withObject:dict];
0是(yourArray索引号)您可以根据数组索引号
进行更改