int arr[1];
int *p;
arr = xxx; // Error
p = xxx; // OK
int arr[10]; 
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| using System; | |
| using System.IO; | |
| using System.Security.Cryptography; | |
| using System.Text; | |
| namespace CardMasterDecompile | |
| { | |
| class Program | |
| { | |
| static void Main(string[] args) |
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| Originated from http://pdinda.org/Papers/ipdps18.pdf | |
| a, b != NaN, a b are floating numbers | |
| a + b = b + a ? True | |
| a + b + c = a + (b + c) ? False | |
| a(b + c) = ab + ac ? False | |
| (a + b) - a = b ? False (Inf, rounding) | |
| a * a >= 0 ? True (but false for integer arithmetic => overflow) | |
| a overflows ? saturation, Inf (integer => wrap-around) | |
| a := 1, b := 0, a / b = ? (Inf, will propagate to ordinary numeric) |
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| from urllib.request import urlretrieve | |
| import requests | |
| from bs4 import BeautifulSoup | |
| import sys | |
| import os | |
| import socket | |
| socket.setdefaulttimeout(150) | |
| import re | |
| class DownloadError: |
I'm just tired of constant optimization and I wrote this note to show some tricks of optimization. Note: no multithread/coroutine
While keeping the structure of std::vector::resize(reserve, push_back/emplace_back) and getopt_long, instead of using dynamic std::string for storing mode, just using (char*)optarg and strcmp and return integer sign to indicate the mode. (It's simple switch (only 3 modes and 2 options), some techniques like place your case index in order and Duff's device are useless.)
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