* English                                                              :deck:

** Vocabulary

*** Item                                                               :note:
    :PROPERTIES:
    :ANKI_NOTE_TYPE: Basic (and reversed card)
    :ANKI_TAGS: vocab idioms
    :END:

**** Front

     (it's) raining cats and dogs

**** Back

     it's raining very hard

* Computing                                                            :deck:

** Item                                                                :note:
   :PROPERTIES:
   :ANKI_NOTE_TYPE: Basic
   :ANKI_TAGS: lisp emacs programming
   :END:

*** Front

    How to trap errors in elisp ?

*** Back

    #+BEGIN_EXPORT html
    <div align="left">
    #+END_EXPORT

    #+BEGIN_SRC emacs-lisp
      (condition-case the-error
          ;; the protected form
          (progn
            (do-something-dangerous)
            (do-something-more-dangerous))
        ;; handlers
        (error-symbol1 (handler1 the-error))
        ((error-symbol2 error-symbol3 (handler the-error))))
    #+END_SRC

    #+BEGIN_EXPORT html
    </div>
    #+END_EXPORT

* Mathematics                                                          :deck:

** Item1                                                               :note:
   :PROPERTIES:
   :ANKI_NOTE_TYPE: Cloze
   :END:

*** Text

    The dot product of two vectors is {{c1::$|\alpha| \cdot |\beta| \cos{\varphi}$}}

*** Extra

** Item2                                                               :note:
   :PROPERTIES:
   :ANKI_NOTE_TYPE: Basic
   :END:

*** Front

    Given two vectors:

    \begin{equation*}
    \alpha = \{a_1, a_2, a_3\}, \beta = \{b_1, b_2, b_3\}
    \end{equation*}


    What's the result of $\alpha \cdot \beta$ ?

*** Back

    \[a_1b_1 + a_2b_2 + a_3b_3\]