Clojure 全栈开发速查表

Namespaces

• doc is in clojure.repl

Leiningen

• lein new app my-app - make a new project
• (in my-app dir): lein run
• (in my-app dir): lein repl
• (in my-app dir): emacs src/my-app/core.clj and M-x cider-jack-in

Paredit

useful: https://www.emacswiki.org/emacs/PareditCheatsheet

• Use M-( for paredit-wrap-around and C-<right arrow> and C-<left arrow> in inner parens to “slurp” and “barf”.
• C-M-f to move to the closing parens.
• C-M-b to move to the opening parens.
• Use M-s to “slurp” extra parens.
• Use M-" for wrapping " marks. You can use C-<right arrow> to slurp more into the string (but barfing does not appear to work).

CIDER

• C-x C-e at the end of a line - eval the line in the REPL
• C-u C-x C-e at the end of a line - print the evaluation
• C-c M-n set the namespace to the namespace at the top of the current file.
• C-c C-k to compile the current file.
• C-c C-c to compile the current function.
• C-<up arrow> or M-p to cycle back through history
• C-<down arrow> or M-n to cycle forward through history
• C-c C-d C-d for documentation for the symbol under the point (q to quit)
• C-c C-d C-a appropos across documentation (q to quit)
• M-. and M-, navigate source for symbol under point

CIDER Error Handling

• q to exit the stack trace
• C-x b *cider-error* to view the error again (q to exit)