我想删除git remote.我刚刚用命令删除了heroku远程url
$ git remote rm heroku
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但是当我尝试在远程用于bitbucket(原点)时使用它.它失败并出现错误
git remote rm origin
fatal: could not unset 'branch.master.remote'
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列出远程时的位置
$ git remote -v
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明确提到
origin git@bitbucket.org:username/myapp.git (fetch)
origin git@bitbucket.org:username/myapp.git (push)
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的.git /配置
[core]
repositoryformatversion = 0
filemode = true
bare = false
logallrefupdates = true
[branch "master"]
[branch "static-pages"]
[remote "origin"]
url = git@bitbucket.org:myUserName/mY_Hidden_App.git
fetch = +refs/heads/*:refs/remotes/origin/*
Run Code Online (Sandbox Code Playgroud) 我按照本指南为 ec2 aws 实例设置 GUI:https ://youtu.be/9BAoJ7JZHr0
sudo apt-get install ubuntu-desktop vnc4server gnome-panel gnome-settings-daemon metacity nautilus gnome-terminal
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ec2 中的 Ubuntu 版本
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 16.04.6 LTS
Release: 16.04
Codename: xenial
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更改:并使用此 ~/.vnc/xstartup 文件:
#!/bin/sh
export XKL_XMODMAP_DISABLE=1
unset SESSION_MANAGER
unset DBUS_SESSION_BUS_ADDRESS
[ -x /etc/vnc/xstartup ] && exec /etc/vnc/xstartup
[ -r $HOME/.Xresources ] && xrdb $HOME/.Xresources
xsetroot -solid grey
vncconfig -iconic &
gnome-panel &
gnome-settings-daemon &
metacity &
nautilus &
gnome-terminal &
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但我没有看到任何终端。我只看到窗户。无法打开终端
gnome amazon-ec2 vnc-viewer amazon-web-services ubuntu-16.04
我有这个基本代码来读取StreamReaderVS Code中带有Dotnet Core 的文件.我可以在Visual Studio中使用.net进行类似的操作,new StreamReader("file.json")它看起来小巧紧凑.
我正在寻找dotnet核心中的另一个类,它可以用更少的代码实现类似的结果
using System;
using System.IO;
namespace ConsoleApplication
{
public class Program
{
public static void Main(string[] args)
{
StreamReader myReader = new StreamReader(new FileStream("project.json", FileMode.Open, FileAccess.Read));
string line = " ";
while(line != null)
{
line = myReader.ReadLine();
if(line != null)
{
Console.WriteLine(line);
}
}
myReader.Dispose();
}
}
}
Run Code Online (Sandbox Code Playgroud) 在下面的代码中,如果我成为College类的类朋友,University那么我可以访问University类的私有属性.但是在College类I中我只希望print函数访问那些私有属性.所以,我只把班级的print功能College作为朋友,但似乎没有用.我错过了什么或做错了什么?
错误:无法访问University类的名称私有属性.
#include <iostream>
//class college;
class University{
//friend class college; // Works fine
friend void College::print(University &ob); // doesn't work
public:
University() = default;
University(int i, char *n) : buildings{ i }, name{ n } {}
private:
int buildings;
char *name;
};
class College{
public:
void print(University &ob){
std::cout << "I am a part of " << ob.name; // <-----------
}
};
int main()
{ …Run Code Online (Sandbox Code Playgroud) 我已经在Turbo-C中编译了第一个版本的代码,它编译时没有任何错误.但是当我在Visual Studio中编译它或从CommandLine编译普通g ++时,我会在帖子中看到错误.
我通过互联网搜索并阅读了一些StackOverflow问题和MSDN LNK1120问题文档.我找到了修复下面代码的方法.但是,没有明确的原因.如何定义摆脱该错误.从语法上讲,容易出错的代码看起来也很好.
1) Error 2 error LNK1120: 1 unresolved externals
2) Error 1 error LNK2019: unresolved external symbol "void __cdecl
totalIncome(class Husband<int> &,class Wife<int> &)" (?totalIncome@@YAXAAV?
$Husband@H@@AAV?$Wife@H@@@Z) referenced in function _main
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注意:请注意程序中的箭头.我明确地说过了.所以,可能不会通过完整的程序.
错误易错代码:
#include <iostream>
using namespace std;
template<typename T> class Wife; // Forward declaration of template
template<typename T>
class Husband{
friend void totalIncome(Husband<T> &hobj, Wife<T> &wobj);
public:
Husband() = default;
Husband(T new_salary): salary{new_salary} {}
private:
T salary;
};
template<typename T>
class Wife{
friend void totalIncome(Husband<T> &hobj, …Run Code Online (Sandbox Code Playgroud) 我有一个我的博览会应用程序正在查询的节点后端。node-express-mongo 后端工作得非常完美,我可以使用 Postman 的 GET 请求进行验证,但我的应用程序中出现未处理的承诺拒绝网络失败错误
完全错误:
[Unhandled promise rejection: TypeError: Network request failed]
- node_modules/whatwg-fetch/dist/fetch.umd.js:473:29 in xhr.onerror
- node_modules/event-target-shim/dist/event-target-shim.js:818:39 in EventTarget.prototype.dispatchEvent
- node_modules/react-native/Libraries/Network/XMLHttpRequest.js:574:29 in setReadyState
- node_modules/react-native/Libraries/Network/XMLHttpRequest.js:388:25 in __didCompleteResponse
- node_modules/react-native/Libraries/vendor/emitter/EventEmitter.js:190:12 in emit
- node_modules/react-native/Libraries/BatchedBridge/MessageQueue.js:436:47 in __callFunction
- node_modules/react-native/Libraries/BatchedBridge/MessageQueue.js:111:26 in __guard$argument_0
- node_modules/react-native/Libraries/BatchedBridge/MessageQueue.js:384:10 in __guard
- node_modules/react-native/Libraries/BatchedBridge/MessageQueue.js:110:17 in __guard$argument_0
* [native code]:null in callFunctionReturnFlushedQueue
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这是我的代码:
api.js
export const fetchMeetups = () =>
fetch('http://localhost:3000/api/meetups')
.then(res => res.json());
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应用程序.js
import * as React from 'react';
import { Platform, StyleSheet, Text, View, …Run Code Online (Sandbox Code Playgroud) 我试图在 Swift 中连接两个字符,但它显示了错误
二元运算符不能应用于两个字符操作数。
let a: Character = "A"
let l: Character = "l"
let al = a + l
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Swift 的字符串支持运算符重载,那么为什么不支持字符呢?
我试图使用标准C库的一些功能,但我得到了这个错误:没有从std :: string到int的合适转换.我刚从C学习C++.请不要用困难的术语解释这个问题.
#include <iostream>
#include <string>
#include <cctype>
using namespace std;
int main(void)
{
string s1{ "Hello" };
bool what{ isalnum(s1) };
return 0;
}
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.net-core ×1
amazon-ec2 ×1
android ×1
bitbucket ×1
c# ×1
c++11 ×1
class ×1
expo ×1
fetch ×1
git ×1
gnome ×1
react-native ×1
swift ×1
templates ×1
ubuntu-16.04 ×1
vnc-viewer ×1