函數不返回，很奇怪

Question

我有一個函數，它獲取一個元素的數組，然後它遍歷數組，當預期的元素被發現它打破並返回。

的功能是這樣的：

def get_expected_element(id:, name:) 
    # I am sure there are 3 elements got 
    elem_array = get_all_elements(id) 

    element = nil 
    elem_array.each { |elem| 
    # I see this log 
    puts "elem = #{elem}" 

    if elem == name 
     element = elem 
     # I see this log too 
     puts "Found element" 
     break 
    end 
    } 
    # I see this log too, and program is hanging 
    puts "=== return ===" 
    element 
end 

當我調用的函數，程序掛puts "=== return ==="後：

service = MyService.new 
element_got = service.get_expected_element(id:3, name:"apple") 

# I don't see the below log 
puts "#{element_got}, I don't see this, why?" 

日誌在控制檯是這樣的：

elem = orange 
elem = apple 
Found element 
=== return === 

<it is hanging> 

我不明白爲什麼被調用的函數不會返回？

Answer 1

離開了爲MyService我跑了這一點：

def get_expected_element(id:, name:) 
    # I am sure there are 3 elements got 
    # elem_array = get_all_elements(id) 
    elem_array = ["elem1", "apple", "elem3"] 

    element = nil 
    elem_array.each { |elem| 
    # I see this log 
    puts "elem = #{elem}" 

    if elem == name 
     element = elem 
     # I see this log too 
     puts "Found element" 
     break 
    end 
    } 
    # I see this log too, and program is hanging 
    puts "=== return ===" 
    element 
end 

puts get_expected_element(id: 3, name: "apple") 

，並得到這個：

elem = elem1 
elem = apple 
Found element 
=== return === 
apple 

你get_expected_element方法似乎罰款。