So this is a demonstration of a lexical analyzer.

lexical analysis, parsing, semantic analysis, optimization, and code generation.

This process is called dun, dun, dun, dun lexical analysis.

We're going to see how to implement this in our lexical analyzer, but recall that our lexical analyzer was just based on regular expressions.

However, quite a few other things make use of lexical analysis.

It's the smallest unit of the output of a lexical analysis.

Lexical here has the same roots and lexicon like a dictionary.

This function call tells our lexical analysis library that we want to use all of the token definitions above to make a lexical analyzer, and break up strings.

So we just learned how to do that JavaScript token in lexical analysis.

Knowledge

Now, recall that the output of a lexical analyzer is a list of tokens.

You're already familiar with all of the key concepts in making a lexical analysis library.

Next knowledge.

And we did Lexing or Lexical Analysis to break it up into a list of tokens.

For example, once I put these 3 rules together, they become a lexer, or lexical analyzer.

And then we'll have the terminal categories or lexical categories, categories that define classes of words.

By looking at this output, we can notice mistakes in our lexical analyzer and help fix them.

Knowledge is power.

Knowledge is power.

Knowledge is power.

I spread knowledge.

We have knowledge.

Knowledge is power.

Well, we need knowledge about language, knowledge about the world and a way to combine these knowledge sources.

If you're making a lexical analyzer for HTML or JavaScript, ordering your token definitions is of prime importance.

And that task uses exactly the same sort of lexical analysis string matching that we've talked about here.

A lexical analyzer or lexer this is a term of art is just a collection of such tokens.

And in fact, suppose we passed to this lexical analyzer the input string 33 is less than 55.

And it turns out that there's effectively a standard, this notion of making lexical analyzers or making parsers.

It's telling Python where to find our lexical analyzer software or libraries that we're going to build upon.

Prerequisite knowledge and software

He has various knowledge.

Your knowledge surprises me.

Knowledge is a commodity.

It's like all knowledge.

Now, that is knowledge.

What gem of knowledge?

Knowledge consists of facts.

These other numbers, after lexical analyzer token STRlNG, with token value, ' This ' are the line and character number information.

In JavaScript, we use curly braces and closing curly braces to denote this sort of lexical or syntactic scope.

Even knowledge came after you,because you are the witness of knowledge

Even knowledge came after you because you are the witness of knowledge.

Universal access to knowledge not American University access to knowledge, but universal access to knowledge in every part of the globe.

As a knowledge policy for the creators of this knowledge, this is crazy.

But your knowledge and your knowledge of history seems to make that impossible.