swift 3.0 String和NSString去空格等邊界字符已經(jīng)變?yōu)?br />
let str5:NSString = "111 "
str5.length
let str6 = "test "
str6.characters.count
str5.trimmingCharacters(in: CharacterSet(charactersIn: " "))
str6.trimmingCharacters(in: CharacterSet(charactersIn: "!@#$%^&*( "))
str5.length
let str6 = "test "
str6.characters.count
str5.trimmingCharacters(in: CharacterSet(charactersIn: " "))
str6.trimmingCharacters(in: CharacterSet(charactersIn: "!@#$%^&*( "))
2016-09-27
最新回答 / 范子祺
好像是沒有了,,,
山居說的沒錯,另外還有一處...
5:00左右的地方提到j(luò)ava 求余問題,其實java也能做,只不過2.5%1.2=0.10000000000000009
5:00左右的地方提到j(luò)ava 求余問題,其實java也能做,只不過2.5%1.2=0.10000000000000009
2016-09-21
已采納回答 / 掃地僧
我再說一個哈,以便大家總結(jié)歸類,就是迭代風(fēng)格的循環(huán)----------for(var i = 0; i<10; i++){}也是被取消了哦
swift3.0輸出有誤為什么呢?
let point = (8,0)
switch point{
case (0,0):
print("It's oringin.")
fallthrough
case (_,0):
print("It's on the x-axis.")
fallthrough
case (0,_):
print("It's on the y-axis.")
default:
()
}
輸出:
It's on the x-axis.
It's on the y-axis.
let point = (8,0)
switch point{
case (0,0):
print("It's oringin.")
fallthrough
case (_,0):
print("It's on the x-axis.")
fallthrough
case (0,_):
print("It's on the y-axis.")
default:
()
}
輸出:
It's on the x-axis.
It's on the y-axis.
2016-09-18