1️⃣
for i in 0..<4 {
print(i)
}
2️⃣
for i in 0...4 {
print(i)
}
..<:包含开始值,不包含结束值。上面1️⃣的输出是:0 1 2 3
...:包含开始和结束值。上面2️⃣的输出是:0 1 2 3 4
1️⃣
for i in 0..<4 {
print(i)
}
2️⃣
for i in 0...4 {
print(i)
}
..<:包含开始值,不包含结束值。上面1️⃣的输出是:0 1 2 3
...:包含开始和结束值。上面2️⃣的输出是:0 1 2 3 4