我有这个哈希表:
h
=> {"67676.mpa"=>{:link=>"pool/sdafdsaff", :size=>4556}}
> h.each do |key, value|
> puts key
> puts value
> end
67676.mpa
linkpool/sdafdsaffsize4556
我如何在循环中访问值哈希中的各个值?
我有这个哈希表:
h
=> {"67676.mpa"=>{:link=>"pool/sdafdsaff", :size=>4556}}
> h.each do |key, value|
> puts key
> puts value
> end
67676.mpa
linkpool/sdafdsaffsize4556
我如何在循环中访问值哈希中的各个值?
Value is a Hash to so you need iterate on it or you can get only values:-
h.each do |key, value|
puts key
value.each do |k,v|
puts k
puts v
end
end
或者
h.each do |key, value|
puts key
value.values.each do |v|
puts v
end
end
?
吗?例如:|?, array|
这是Ruby
中的有效语法吗? - huzefa biyawarwala|_key, value|
。@huzefabiyawarwala - Severin您需要通过哈希表进行递归,以下是一个递归方法:
def ihash(h)
h.each_pair do |k,v|
if v.is_a?(Hash)
puts "key: #{k} recursing..."
ihash(v)
else
# MODIFY HERE! Look for what you want to find in the hash here
puts "key: #{k} value: #{v}"
end
end
end
您可以随后将任何哈希值传递进来:
h = {
"x" => "a",
"y" => {
"y1" => {
"y2" => "final"
},
"yy1" => "hello"
}
}
ihash(h)
?
吗?例如:|?, array|
这种语法是有效的吗? - huzefa biyawarwalahttps://gist.github.com/kjakub/be17d9439359d14e6f86
class Hash
def nested_each_pair
self.each_pair do |k,v|
if v.is_a?(Hash)
v.nested_each_pair {|k,v| yield k,v}
else
yield(k,v)
end
end
end
end
{"root"=>{:a=>"tom", :b=>{:c => 1, :x => 2}}}.nested_each_pair{|k,v|
puts k
puts v
}
h.each do |key, value|
puts key
puts value[:link]
puts value[:size]
end
hash.values
直接访问哈希表的值。在这种情况下,您可以采取以下操作:> h = {"67676.mpa"=>{:link=>"pool/sdafdsaff", :size=>4556}}
> h.values.each do |key, value|
> puts "#{key} #{value}"
> end
link pool/sdafsaff
size 4556