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Пример задач к контрольной работе

Арифметика

sh :: Double -> Double
sh x = undefined

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final class AnyRefOption[T >: Null <: AnyRef] private(private val value: T) extends AnyVal {
  def isEmpty = value == null
  def isDefined: Boolean = !isEmpty
  def get: T = value

  def foreach[U](fn: T => U): Unit = {
    if (isDefined) fn(value)
  }

  def let[U](fn: T => U) = if (isDefined) fn(value) else AnyRefOption(null)

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# open eshell in terminal emacsclient
alias tesh="te --eval '(restart-eshell)'"

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;; Enable Company in selected major modes
(let ((hooks '(java-mode-hook)))
  (dolist (hook hooks)
    (add-hook hook (lambda ()
		     (company-mode 1)))))

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;;; Rebind 'GOTO beginning/end of buffer' to "C-M-v"
(defun edge-of-buffer ()
  (interactive)
  (if (and current-prefix-arg (eq current-prefix-arg '-))
      (beginning-of-buffer) (end-of-buffer)))

(global-set-key (kbd "C-M-v") 'edge-of-buffer)

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;; https://www.gnu.org/software/emacs/manual/html_node/emacs/Saving-Emacs-Sessions.html
(desktop-save-mode 1)

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;;; Display a list of existing buffers in current window
(global-set-key (kbd "C-x C-b") 'buffer-menu)

;; List buffers in other window using "C-x 4-" prefix
(global-set-key (kbd "C-x 4 C-x C-b") 'list-buffers)

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;;; Show directories first in Dired
(setq dired-listing-switches "-al --group-directories-first")

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(defun graphviz-on-buffer ()
  (interactive)
  (shell-command-on-region (point-min) (point-max) "dot -Txlib"))

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;;; Relative line numbers
(setq display-line-numbers-type 'relative)
(global-display-line-numbers-mode)

;; Move toward logical lines when prefix arg (numeric, negative) is presented
(defun next-logical-line-if-prefix (&optional arg try-vscroll)
  (interactive "^p\np")
  (let ((line-move-visual (if current-prefix-arg nil line-move-visual)))
    (with-no-warnings
      (next-line arg try-vscroll))))