for loop

웃기다

C언어 찔끔 공부했다고

C언어가 좋음 (?)

R 너무 막무가내같음

---

for (var in seq) {
	expr
}


cities <- c ("NY", "paris", "Seoul", "London", "Saint Petersburg")

for (city in cities) {
	print(city)
   }

 

<break>

for (city in cities) {
	if(nchar(city) == 3) {
    	break
    }
 	print(city)
 }

 

*break를 쓰면 for문 전체를 빠져나온다

한 번 막히면 뒤에 있는 다른 city들은 검사하지도 못함

 

<next>

for (city in cities) {
	if(nchar(city) == 3) {
    	next
    }
 	print(city)
 }

*slightly different from break statement

it skips the remainder of the code inside the for loop and proceeds to the next iteration. As soon as next is encountered, the print(city) is not processed and the for loop is continued.

*요소 하나만 뛰어넘고 for문은 계속 돌아감

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이게 더 좋은 듯

for (i in 1: length(cities)) {
	print(cities[i])
}

 

list로 할거면

print(cities[[i]])

해줘야하는 듯

 

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strsplit() function