Take some notes clj->janet

clj_to_janet.md

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+# From Clojure to Janet
+## How to convert files
+
+### Comments
+`% s ; r # <esc>`
+
+
+### called keyword property access
+Use a macro:
+- Select `\ \( : ret <esc>`
+- Record the macro: `Q n <esc> v e c get <esc> e e a <space> <esc> p <esc> Q`
+- Then just `q` until you've changed everything
+
+### Chars don't exist
+- \char -> "char", e.g.
+- \newline -> "\n", etc.
+- \a -> "a"
+
+### Use mutable arrays and tables
+Where data structures are mutable, add `@`s.
+
+### Sets & tables
+Sets don't exist in Janet. Use tables with values set to `true`.
+
+### Strings -> number literals
+- Clj uses `edn/read-string`; Janet uses `parse-all`
+
+### `loop` -> `defn recur`
+- Clj's `loop` is very different from Janet's `loop`
+- As a quick and dirty workaround, change it to an interior recursive function
+- Janet has tail calls, so this is nearly as efficient (paying the overhead for creating the function)
+- An optimization is to pull out these functions and declare them at the toplevel
+
+### current-char
+
+
+### Straight replacements:
+- nth -> get
+- assoc -> put
+- conj -> array/push
+- str -> string
+- substr -> slice