$Récréations mathématiques, par Édouard Lucas. 2e édition...$

Récréations mathématiques, par Édouard Lucas. 2e édition...

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Détails bibliographiques
Auteur principal:	Lucas, Édouard.
Support:	Livre
Langue:	Français
Publié:	Paris : Gauthier-Villars et fils, 1881-1894.

Table des matières:

I. Les traversées. Les ponts. Les labyrinthes. Les reines. Le solitaire. La numération. Le baguenaudier. Le taquin ; II. Qui perd gagne. Les dominos. Les marelles. Le parquet. Le casse-tête. Les jeux de demoiselles. Le jeu icosien d'Hamilton ; III. Le calcul digital. Machines arithmétiques. Le caméléon. Les jonctions de points. Le jeu militaire. La prise de la Bastille. La patte d'oie. Le fer à cheval. Le jeu américain. Amusements par les jetons. L'étoile nationale. Rouge et noire ; IV. Le calendrier perpétuel. L'arithmétique en boules. L'arithmétique en bâtons. Les marelles au XIIIe siècle. Les carrés magiques de Fermat. Les réseaux et les dominos. Les régions et les quatre couleurs. La machine à marcher

if (filemtime($filename) + $maxlifetime < time()) { unlink($filename); } } return true; } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ protected function saveSession($sessId, $data) { $sessFile = $this->path . '/sess_' . $sessId; if ($handle = fopen($sessFile, "w")) { $return = fwrite($handle, $data); fclose($handle); if ($return !== false) { return true; } } // If we got this far, something went wrong with the file output... // It is tempting to throw an exception here, but this code is called // outside of the context of exception handling, so all we can do is // echo a message. echo 'Cannot write session to ' . $sessFile . "\n"; return false; } }

// Anecdotal testing Today and Yesterday seems to indicate destroy() // is called by the garbage collector and everything is good. // Something to keep in mind though. return true; } /** * Write function that is called when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ public function write($sessId, $data) { if ($this->writesDisabled) { return true; } return $this->saveSession($sessId, $data); } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ abstract protected function saveSession($sessId, $data); }

* * @return void */ public function writeClose() { // The assumption is that we're using PHP's ext/session. // session_write_close() will actually overwrite $_SESSION with an // empty array on completion -- which leads to a mismatch between what // is in the storage object and $_SESSION. To get around this, we // temporarily reset $_SESSION to an array, and then re-link it to // the storage object. // // Additionally, while you _can_ write to $_SESSION following a // session_write_close() operation, no changes made to it will be // flushed to the session handler. As such, we now mark the storage // object isImmutable. $storage = $this->getStorage(); if (! $storage->isImmutable()) { $_SESSION = $storage->toArray(true); session_write_close(); $storage->fromArray($_SESSION); $storage->markImmutable(); } } /** * Attempt to set the session name * * If the session has already been started, or if the name provided fails * validation, an exception will be raised. * * @param string $name * @return SessionManager * @throws Exception\InvalidArgumentException */ public function setName($name) { if ($this->sessionExists()) { throw new Exception\InvalidArgumentException( 'Cannot set session name after a session has already started'

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Récréations mathématiques, par Édouard Lucas. 2e édition...

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