Ruby 字符串连接问题 [英] Problem with Ruby string concatenation

问题描述

这有效

irb(main):001:0> name = "Rohit " "Sharma"
=> "Rohit Sharma"

但这没有

irb(main):001:0> fname = "Rohit "
=> "Rohit "
irb(main):002:0> lname = "Sharma"
=> "Sharma"
irb(main):003:0> name = fname lname

它给出了这个错误

NoMethodError: undefined method `fname' for main:Object
from (irb):3

请提供一些建议.提前致谢.

Please provide some suggestions. Thanks in advance.

更新

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推荐答案

该错误与 fname 必须是一个函数才能工作有关.相反，尝试

The error is related to the fact that fname would have to be a function for this to work. Instead, try

name = fname + lname

甚至

name = "#{fname}#{lname}"

但是你有过的地方

name = "Rohit " "Sharma"

这是一个特例，因为 Ruby 会自动连接两个字符串.

it is a special case, since Ruby will join the two strings automatically.

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