...the last value. Consider the example of one file which has a column called user_id. It contains 10 million rows where the user_id is always numbers. Since pandas cannot know it is only numbers, it will probably keep it as the original strings until it has read the whole file. Specifying dtypes (shou...

...s and should follow the conventions for constants. So enum Fruit {APPLE, ORANGE, BANANA, PEAR}; There is no reason for writing FruitEnum any more than FruitClass. You are just wasting four (or five) characters that add no information. Java itself recommends this approach and it is used in their...

... is kind of lost. So I would do like this instead: rails g migration add_user_id_to_tester user_id:integer And then manually add belongs_to :user in the Tester model share | improve this answer ...

...d each command is represented as a function. services.py def activate_user(user_id): user = User.objects.get(pk=user_id) # set active flag user.active = True user.save() # mail user send_mail(...) # etc etc Using forms The other way is to use a Django Form for each co...

... It is defined by several gems, e.g. Devise You'll need to store the user_id somewhere, usually in the session after logging in. It also assumes your app has and needs users, authentication, etc. Typically, it's something like: class ApplicationController < ActionController::Base def cu...

...f a certain type, and returns an array of the same type. 4) You can't mix oranges and apples. You would be able to add an Object to your String list if you could pass a string list to a method that expects object lists. (And not all objects are strings) ...

... have a stored procedure that alters user data in a certain way. I pass it user_id and it does it's thing. I want to run a query on a table and then for each user_id I find run the stored procedure once on that user_id ...

... if (response && response.authResponse) { var user_id = response.authResponse.userID; var fql_query = "SELECT uid FROM page_fan WHERE page_id = "+page_id+"and uid="+user_id; FB.Data.query(fql_query).wait(function(rows) { if (rows.len...

...cope a validates_uniqueness_of call as follows. validates_uniqueness_of :user_id, :scope => :friend_id share | improve this answer | follow | ...

...bers, this stored procedure will help: ---------------------------------- user_id | team_id ---------------------------------- admin | NULL ramu | admin suresh | admin kumar | ramu mahesh | ramu randiv | suresh ----------------------------------- Code: DROP ...