Ruby字符串忽略最后一个字符

Question

how to ignore last character inside string in ruby? if i have problem like this, example :

abc = "123456a"

how to get result like this :

abc = "123456"

i don't need last character inside the string, how to ignore it?

thanks before :)

Answer 1

You can try:

abc.chop!  

chop will delete the last character and ! will change the content in place.

Answer 2

试试这个解决方案：

my_string[0..-2]

Answer 3

Negative indices index from the end, -1 is the last character; so to get everything up to next to last character, you'd write

abc[0..-2]

Answer 4

There are many ways to make it.

abc[0..-2]

abc[0..(abc.length-2)]

abc.delete abc[-1]