我一直在尝试在 Ruby 中编写类似于以下内容的 while 循环：
number = 3
string = "lalaLand"
def main(number, string)
n = 1
while n <= number do
print string + 'something else' + n.to_s
n = n + 1
end
end
main(number, string)
我不断收到错误：
...: undefined method `+@' for "lalaLand":String (NoMethodError)
谁能帮我这个？谢谢
----EDIT--- （实际代码，也许我错过了一些东西）
devel_number是唯一声明为 int 的（即：devel_number = 4，其余为字符串：project_name = "lalaLand"）...
def b_sani_dev(project_home, source_dir, project_name, devel_number)
n = 1
while n <= devel_number do
system 'mkdir -p ' + project_home + 'dev_'+ n.to_s + '/main'
system 'mkdir -p ' + project_home + 'dev_' + n.to_s + '/LOG'
n = n + 1
end
b_sani_dev(project_home, source_dir, project_name, devel_number)