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;;; Copyright (c) 2021 Teddy Wing
;;;
;;; This file is part of Extreload.
;;;
;;; Extreload is free software: you can redistribute it and/or modify
;;; it under the terms of the GNU General Public License as published by
;;; the Free Software Foundation, either version 3 of the License, or
;;; (at your option) any later version.
;;;
;;; Extreload is distributed in the hope that it will be useful,
;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with Extreload. If not, see <https://www.gnu.org/licenses/>.
(in-package :extreload)
(defmacro filter (predicate list-form)
"Returns a sequence that only includes elements of `list-form` that satisfy
the test of `predicate`."
`(remove-if-not ,predicate ,list-form))
(defmacro with-websocket-connection ((client) &body body)
"Open a WebSocket connection on `client` and run `body` forms. The connection
is automatically closed at the end of execution."
`(progn
(wsd:start-connection ,client)
(unwind-protect (progn ,@body)
(wsd:close-connection ,client))))
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