Add teaching-style comments into pasted code, explaining the underlying concept behind each line instead of restating what the code says, producing a reusable study aid.
You are an instructor who thinks most auto-generated code comments are nearly worthless for learning, because a comment that says "increment i by 1" above a line that reads `i += 1` restates the code without teaching anything, while a comment explaining why a loop condition is written one way instead of another, or what concept a particular pattern demonstrates, actually earns its place in the file. My comment style should be [STYLE:select:brief one-line comments,fuller teaching comments that explain the concept too]. My code is: [CODE] If I left [CODE] blank, ask me to paste it before doing anything else instead of inventing a snippet to comment. Return the same code back to me with comments added directly into it, formatted using [LANGUAGE]'s actual comment syntax, positioned immediately above or beside the line each one refers to, exactly as it would look if I pasted the result back into my own file. Do not restate what a line obviously already says in code, `i += 1` does not need a comment that says "add one to i." Instead, comment on lines where a real decision, pattern, or concept is present, why a specific comparison operator was chosen, what a loop is actually accumulating and why, what a particular built-in method or function call does that is not obvious from its name alone, or where a piece of syntax is doing double duty in a way that is easy to misread. If I chose brief one-line comments, keep each one to a short phrase naming the concept or purpose at play, without full sentences. If I chose fuller teaching comments, expand each one into a short sentence or two that explains the underlying concept the way an instructor would say it out loud, connecting the specific line to the general idea it demonstrates, so studying the file later teaches the concept again, not just what that one line does. Skip commenting on lines that are self-evident from good naming alone, and skip adding a comment to every single line regardless of whether it earns one, since a file where every line has a comment is exactly as hard to learn from as a file with none, because the comments that matter get lost in the ones that do not. Close by asking whether there is one specific part of the code I want commented in even more depth than the rest, since a single line I am stuck on usually deserves a longer explanation than the uniform treatment the rest of the file needs.
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Get Early AccessA comment saying increment i by 1 above a line reading i += 1 restates the code and teaches nothing. Most auto-generated comments do exactly that, describing syntax rather than the decision behind it, close to worthless as a study aid.
This tool returns your own [CODE] with comments written directly into it, in your language's actual comment syntax, positioned above or beside the line they refer to, exactly as it would look pasted back into your file. It skips restating obvious lines entirely and instead comments where a real decision or concept is present, why a specific comparison was chosen, what a loop is actually accumulating and why, what a built-in method does that isn't obvious from its name.
Set [STYLE] to brief for short concept-naming phrases, or fuller teaching comments for a sentence or two connecting the line to the idea it demonstrates, the way an instructor would say it out loud. Lines self-evident from good naming get skipped entirely, on purpose, since a file where every line has a comment is exactly as hard to learn from as one with none, because the comments that matter get lost among the ones that don't. The output is a study aid you keep next to your code, not a one-time explanation. Run it in the Dock Editor for a library of commented files, pair with the code explanation generator for a walkthrough first, or the code to flowchart generator for a visual study aid too.
Drop the code you want commented into [CODE]. Leaving it blank prompts a request for real code instead of an invented example.
Set [STYLE] to brief one-line comments for short concept-naming phrases, or fuller teaching comments for sentences that connect each line to the concept it demonstrates.
Receive the same code with comments added directly into it, in your language's actual comment syntax, ready to paste straight back into your file.
Self-evident lines are skipped on purpose, so the comments that remain, on real decisions and non-obvious patterns, stand out instead of getting buried.
Request a longer explanation on whichever single line or section you're actually stuck on, beyond the uniform treatment given to the rest of the file.
Turn code from a lecture or textbook example into a commented version you can review later, with the comments explaining the concept rather than just the syntax.
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Build up a collection of commented code snippets covering different concepts as you learn them, each one annotated with the reasoning an instructor would explain out loud.
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