78464/how-to-check-if-a-specific-key-is-present-in-a-hash-or-not
I want to check whether the "user" key is present or not in the session hash. How can I do this?
Note that I don't want to check whether the key's value is nil or not. I just want to check whether the "user" key is present.
Hello @kartik,
While Hash#has_key? gets the job done, as it has been deprecated in favour of Hash#key?.
hash.key?(some_key)
Hope it helps!!
Thank You!!
Hello, You can use fs.existsSync(): const fs = require("fs"); // ...READ MORE
Hello @kartik, You can get the list of Users ...READ MORE
Hello @kartik, You can use CSS: class .hide { ...READ MORE
Hello @kartik, You would use indexOf like this: if(window.location.href.indexOf("franky") != -1){....} Also ...READ MORE
Hello @kartik, Try this: rake db:migrate:down VERSION=20100905201547 will roll back ...READ MORE
Hello @kartik, Use the pretty_generate() function, built into later versions ...READ MORE
Hello @kartik, Use this: remove_column :table_name, :column_name For instance: remove_column :users, ...READ MORE
Hello @kartik, In order to use local gem ...READ MORE
Hello @kartik, Use JSON.parse function isJson(str) { ...READ MORE
Hii @kartik, This is simple task to send single ...READ MORE
OR
At least 1 upper-case and 1 lower-case letter
Minimum 8 characters and Maximum 50 characters
Already have an account? Sign in.