对 typedef 可能产生的错误理解:
typedef char *pstring;
const pstring cstr = 0; // cstr is a constant pointer to char
const pstring *ps; // ps is a pointer to a constant pointer to char
其中第二句是否等同于:
对 typedef 可能产生的错误理解:
typedef char *pstring;
const pstring cstr = 0; // cstr is a constant pointer to char
const pstring *ps; // ps is a pointer to a constant pointer to char
其中第二句是否等同于:
from concurrent.futures import ThreadPoolExecutor | |
from functools import partial, wraps | |
import time | |
import tornado.ioloop | |
import tornado.web | |
EXECUTOR = ThreadPoolExecutor(max_workers=4) |
from time import sleep | |
from tornado.httpserver import HTTPServer | |
from tornado.ioloop import IOLoop | |
from tornado.web import Application, asynchronous, RequestHandler | |
from multiprocessing.pool import ThreadPool | |
_workers = ThreadPool(10) | |
def run_background(func, callback, args=(), kwds={}): | |
def _callback(result): |
#!/usr/bin/env python | |
# | |
# Copyright 2001-2002 by Vinay Sajip. All Rights Reserved. | |
# | |
# Permission to use, copy, modify, and distribute this software and its | |
# documentation for any purpose and without fee is hereby granted, | |
# provided that the above copyright notice appear in all copies and that | |
# both that copyright notice and this permission notice appear in | |
# supporting documentation, and that the name of Vinay Sajip | |
# not be used in advertising or publicity pertaining to distribution |