如何删除一个元素开始以下划线红宝石阵列

Question

我具有阵列

["You purchased 2 tickets to: \n", 
"____________________________________________________________________________\n", 
"_________________ \n", 
"The Temper Trap\n", "Webster Hall, New York, NY\n", "Fri, Apr 2, 2010 07:00 PM \n", 
"\n", "Order for: Vikas Sekhri\n"] 

我想删除下划线（装置的阵列的第二和第三元素）。我需要这样的

["You purchased 2 tickets to: \n", "The Temper Trap\n", "Webster Hall, New York, NY\n", "Fri, Apr 2, 2010 07:00 PM \n", "\n", "Order for: Vikas Sekhri\n"] 

任何人都可以帮助我

Answer 1

arr = ["You purchased 2 tickets to: \n", "____________________________________________________________________________\n", "_________________ \n", "The Temper Trap\n", "Webster Hall, New York, NY\n", "Fri, Apr 2, 2010 07:00 PM \n", "\n", "Order for: Vikas Sekhri\n"] 

arr.reject { |elt| elt.starts_with? "_" } 

Answer 2

array.reject! {|element| element =~ /_/ } 

此修改数组。如果你不想修改它，请使用reject（没有爆炸）。