红宝石 |切弦法
Chop是 Ruby 中的 String 类方法,用于返回删除最后一个字符的新字符串。如果字符串以 \r\n, b 结尾,则删除这两个字符。将chop 应用于空字符串会返回一个空字符串。
Syntax:str.chop
Parameters: Here, str is the given string.
Returns: A new string having no record separator.
示例 1:
Ruby
# Ruby program to demonstrate
# the chop method
# Taking a string and
# using the method
puts "Ruby".chop
puts "Ruby\r\n".chop
Ruby
# Ruby program to demonstrate
# the chop method
# Taking a string and
# using the method
puts "String\r\n\r\r\n".chop
# Removing two characters
puts "Method".chop.chop
输出:
Rub
Ruby
示例 2:
红宝石
# Ruby program to demonstrate
# the chop method
# Taking a string and
# using the method
puts "String\r\n\r\r\n".chop
# Removing two characters
puts "Method".chop.chop
输出:
String
Meth