I have the following hash:
我有以下散列:
a = {
foo: 'bar',
answer: '42'
}
How can I elegantly rename the key :foo to a new key :test? If the hash entry for :foo does not exist, the hash should not be altered.
如何优雅地将key:foo重命名为新的key:test?如果:foo的散列条目不存在，则不应该修改散列。
1 个解决方案
#1
7
a[:test] = a.delete(:foo) if a.key?(:foo)
#1
7
a[:test] = a.delete(:foo) if a.key?(:foo)