RT-Thread 杂项笔记
此篇是笔者个人学习过程中的笔记,有啥写啥,没怎么分类,不定期更新
1.开机首先运行的内容写在startup.c里
2.一般情况下不需要刻意确定线程的栈空间大小,但是在一些苛刻的条件下就需要修改栈大小。在RT-Thread中,可以先指定一个稍微大的栈空间,例如指定大小为1024或2048,然后在FinSH shell中通过list_thread()命令查看线程运行的过程中线程所使用的栈的大小,通...
ubuntu18.04关机只有左上角光标闪动
/* 第一篇blog,现在也算是差不多入了linux的门,觉得有必要开一篇blog对IT的学习做一个记录 */
下面是正题
出现这种情况,首先想一想自己是不是最近装了mysql数据库,如果是的话,那么很大程度就是这个问题
step 1.将开关机中系统进行的内容加以显示
sudo atom /etc/default/grub
GRUB_CMDLINE_LINUX_DEFAULT=”qu...
Linux下软件安装及主机配置笔记
/* Linux 重装笔记,基本的软件安装以及主机配置 */
–google:
1.下载.deb文件,cd到下载目录下
2.sudo dpkg -i google-chrome-stable_current_amd64.deb
3.sudo apt -f install
–创建home下的work目录
1.cd ~/.config
2.gedit user-dirs.dirs
...
Ubuntu18.04 + win10双系统下时间问题
首先要明白操作系统时间和硬件时间的区别
操作系统时间是根据硬件时间换算出来的
win10下如果硬件时间是13:00,时区为东八区,那么OS时间为13:00
Ubuntu下如果硬件时间是13:00,时区为东八区,那么OS时间为21:00,也就是说Ubuntu默认会把硬件时间当成UTC!
明白这点以后,在win10下先校正时间,然后在Ubuntu下将时区设置为UTC就可以了
这里注意不要用英...
关于EL在JSP内调用RequestScope内置对象报错的问题
先贴出源码Search.javapublic class Search {
private String dest;
private String date;
public void setDest(String e){
dest = e;
}
public void setDate(String d){
date = d...
【爆炒洋葱圈】微信小程序Ecourse的基于Ubuntu Server的服务器搭建笔记
大二菜鸡一枚 只是记录一下自己的学习过程 绝无显摆之意 如有过错 敬请批评指教
这几天参加微信小程序设计大赛 借用了学长大三课设的作业Ecourse微信小程序作为参赛作品
本次比赛对我来说的主要难点是搭建一个Linux服务器 这是我之前从来没有接触过的
服务器学长已经买好了 是京东云的基于Ubuntu Server的服务器 于是我要做的就是在这个基础上搭建Ecourse小程序所需要的服...
Equalize the Remainders(CF-999D)
Problem Description
You are given an array consisting of n integers a1,a2,…,an, and a positive integer m. It is guaranteed that m is a divisor of n.
In a single move, you can choose any position i b...
暑期训练日志----2018.8.7
训练第9天。
上午肚子不舒服在床上基本躺了一上午,中午看了看扩展欧几里得和中国剩余定理的题,下午个人赛打的比较舒服,自从学了 find 之后还没用过,这次总算见到使用 find 的题了,晚上看了看没A出来的几个题,都是STL方面的,要找时间恶补一下。
...
Problem C:Maya Calendar(POJ-1008)
Problem Description
During his last sabbatical, professor M. A. Ya made a surprising discovery about the old Maya calendar. From an old knotted message, professor discovered that the Maya civilizatio...
Problem D:Strange Way to Express Integers(POJ-2891)
Problem Description
Elina is reading a book written by Rujia Liu, which introduces a strange way to express non-negative integers. The way is described as following:
Choose k different positive inte...
Divide by three, multiply by two(CF-977D)
Problem Description
Polycarp likes to play with numbers. He takes some integer number x, writes it down on the board, and then performs with it n−1 operations of the two kinds:
divide the number x b...
Less or Equal(CF-977C)
Problem Description
You are given a sequence of integers of length n and integer number k. You should print any integer number x in the range of [1;109] (i.e. 1≤x≤10^9) such that exactly k elements o...
Two-gram(CF-977B)
Problem Description
Two-gram is an ordered pair (i.e. string of length two) of capital Latin letters. For example, "AZ", "AA", "ZA" — three distinct two-grams.
You are given a string s consisting of...
Remove Duplicates(CF-978A)
Problem Description
Petya has an array aa consisting of n integers. He wants to remove duplicate (equal) elements.
Petya wants to leave only the rightmost entry (occurrence) for each element of the ...
File Name(CF-978B)
Problem Description
You can not just take the file and send it. When Polycarp trying to send a file in the social network "Codehorses", he encountered an unexpected problem. If the name of the file c...
Letters(CF-978C)
Problem Description
There are nn dormitories in Berland State University, they are numbered with integers from 1 to n. Each dormitory consists of rooms, there are aiai rooms in i-th dormitory. The ro...
暑期训练日志----2018.8.9
训练第11天。
这几天吃泡面把肚子吃坏了。。。上午A了个题肚子又不舒服回宿舍接着躺尸去了。。。
下午比赛做的很舒服,但还是细节注意的不够,不是这个题忘开 long long 了,就是那个题输出格式没控制好orz,真是慌的一批。。。
有两个题的题解还没写,明天再搞吧。。。
...
关于高博十四讲中由于g2o更新出现的问题解决
在高博视觉slam十四讲中的第6讲中实践g2o中出现了编译错误。/home/ze/am/slambook-master/ch6/g2o_curve_fitting/main.cpp:77:49: error: no matching function for call to ‘g2o::BlockSolver >::BlockSolver(g2o::BlockSolver >::LinearSol
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