It's a list where each element of the list is a list containing a keyword and a list as its second element, and that list is a list of URLs where that keyword appears.

It contains the keyword here the keyword udacity followed by a list containing all the URLs where that keyword appears.

The fourth choice is a list where each element is a list and each element list is a keyword followed by a list of all the URLs that contain that keyword.

The keyword is always the first element of the list.

It has the keyword followed by a list of URLs.

And each element would be a list of the keyword followed by the URLs where that keyword appears.

So, if the keyword is not in the index, what we need to do is add a new entry to the index, and that new entry will be a list with the keyword, that's the new keyword, and the list the list of URLs where that keyword appears.

So the first option is we could have a single list where we have a keyword followed by the URLs where that keyword appears followed by another keyword followed by the URLs where that keyword appears.

Keyword

So if you search for a keyword, you want to get a response that's a list of the pages where that keyword appears.

Remember that we decided in the previous question that the way to represent index is as a list where each element of the list is itself a list and each of the element list is a keyword followed by a list of the URLs where that keyword appears.

New Keyword

Reserved Keyword

Keyword almost.

No keyword given.

Each keyword is a string and the keyword is followed by the URLs where that keyword appears.

We only want to have that keyword appear once what we want to do instead is add the URL to the list of URLs already associated with that keyword.

Remember that it is a list of entries, and each entry is itself a list, where the 1st part is a keyword, and the 2nd part is a list of URLs.

So the output of lookup should be a list of all the URLs associated with the input keyword.

The result from doing a lookup on the keyword udacity should be a list containing those 2 URLs.

What we are going to build in this unit is a search engine, where we can pass in a keyword and get a list of the pages that contain that keyword.

And we have the keyword followed by the URLs where that keyword appears.

Enter here a new keyword.

The Second keyword is Empathy .

URLs associated with that keyword.

We have the keyword for followed by a name, and this is a new name for a variable that we can introduce, then the keyword in followed by a list, and this is any expression which evaluates to a list followed by a colon.

This whole thing is what we want to add so, that's a list containing the value keyword as its 1st element.

By keeping all the URLs in a list, we can treat that as a list and do things with it much more easily than if it's combined with a keyword.

We're gonna be top search keyword!

We write out the keyword function.

You can choose a keyword to show only document files that are related to this keyword.

If it's not found, it adds a new entry to the index, that's the list of the keyword, and the single URL.

For each list contained, we just need to look at the first element to see if that's the keyword we're looking for.

list comprehensions in Python, filtering a list to retain only some required elements, and I noticed that in JavaScript you included the ability to create an anonymous function with the function keyword.

Start the search for the chosen keyword.

Now we need to find the keyword.

let's use the keyword udacity and for the 3rd input we need the URL where that keyword appears.

And the element lists are themselves lists which contain the keyword followed by URLs where that keyword appears.

And I can check to see if an element is in a list in Python just by using the keyword in putting the element on the left and the list on the right.

That's the list that we want to add to the index to represent that we found this keyword at this one URL so far.

To find the next keyword, if we start from keyword one, we don't know which position to look at.

The keyword andy is associated with 2 URLs udacity.com and searchwithpeter.info and the keyword irvin is associated with udacity.com .

We defined the lookup procedure that takes the index and the keyword, finds the entry in the index that corresponds to that keyword, and returns the URLs associated with that keyword.

Daily journal with calendar, templates and keyword searching

Enter the name of the custom keyword here...