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실제로 만난 문장, 22.06.10This approach allows you to avoid the as clause altogether. It also makes it abundantly clear to new readers of the code where eac

:: important in making something happen

CSS Layout의 왕, Grid Layout MDN 문서 보는 중...

CSS responsive web design 내용 중

The behavior is closer to the archetypal responsive grid I have in mind, and will be the layout we purse here. There's just one major implementation i

While we're setting things up, another key piece of infrastructure is error handling. Textbooks sometimes gloss over this because it's more a practica

The lexemes are only the raw substrings of the source code. However, in the process of rouping character sequences into lexems, we also stumble upon s

Now that we know what we're tyring to produce, let's, well, produce it. The core of the scanner is a loop. Starting at the first character of the sour

Since our goal is to understand how a scanner does what it does, we won't be delegating that task. We're about handcrafted goods. Without further ado,

Without further ado, let's make ourselves a scanner.I know static imports are considered bad style by some, but they save me from having to sprinkle T

The code represents each invalid character separately, so this shotguns the user with a blast of errors if they accidentally paste a big blob of weird

If I gave an arithmetic expression, you could draw one of these trees pretty easily. Given a tree, you can evaluate it without breaking a weat. So it

Each production in a context-free grammar has a head - its name - and a body, which describes what it generates. In its pure form, the bod is simply a

Expr is the base class that all expression classes inherit from. As you can see from Binary, the subclasses are nested inside of it. There’s no techni

I avoid abbreviations in my code because they trip up a reader who doesn’t know what they stand for. But in compilers I’ve looked at, “Expr” and “Stmt

Finally, we get to write some code. That little expression grammar is our skeleton. Since the grammar is recursive—note how grouping, unary, and binar

People have thrown all sorts of language features, design patterns, and programming tricks to try to knock that problem down but no perfect language h

It’s easier than you think, partially because we front-loaded a lot of the hard work in the last chapter. You already know your way around a formal g

When we were focused on high-level concepts, it was fine to gloss over those. But now that we know our way around an interpreter, it’s time to dig dow

Even if the objects happened to be allocated in sequential memory when the parser first produced them, after a couple of rounds of garbage collection—

Imagine you’re writing a native compiler from some source language and you’re given carte blanche to define the easiest possible architecture to targe

At the moment, this is simply a wrapper around an array of bytes. Since we don’t know how big the array needs to be before we start compiling a chunk,