我使用这个jQuery代码片段来隐藏向下滚动的菜单和滚动向上显示的菜单:
var prev = 0;
var $window = $(window);
var nav = $('.nav');
$window.on('scroll', function(){
var scrollTop = $window.scrollTop();
nav.toggleClass('hidden', scrollTop > prev);
prev = scrollTop;
});
它像预期的那样工作,但我只希望它在用户滚动500 i
在Ubuntu18.04Server上将R更新到3.5.1版本后,我收到了此错误消息fatal error: unable to open the base package,我尝试卸载并重新安装软件包三次,但仍然得到相同的错误。我怎么才能解决这个问题?
这是我的server>>上当前的R版本
IN: apt policy r-base
OUT: Installed: 3.5.1-1xenial
Candidate: 3.5.1-1xenial
Version table:
* 3.5.1-1xenial 500
500 https://cloud.r-p
我对团结是陌生的。我只想学习如何让我的球员跳一次。
我试图搜索答案,但不知道如何在脚本中添加跳转命令。
我在下面添加了代码:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class PlayerMovement : MonoBehaviour
{
// Ridgidbody component nammed as rb
public Rigidbody rb;
public float ForwardForce = 2000f;
p
这是我的第一个问题,我对Linux和Ubuntu非常陌生,所以请不要对我太客气。
从昨天起,我一直在努力想办法解决这个问题,我的情况似乎和其他的不同。或者至少我认为是这样。
下面的输出在syslog和kern.log中处于循环状态
Dec 21 22:12:54 JoeGo kernel: [46897.103659] usb usb3-port4: attempt power cycle
Dec 21 22:12:55 JoeGo kernel: [46897.755658] usb 3-4: new high-speed USB device number 70 using xhci_hc
我一直试图在ubuntu上安装R4.1,每次我都得到相同的错误
The following packages have unmet dependencies:
r-base : Depends: r-base-core (>= 4.1.2-1.2004.0) but 3.6.3-2 is to be installed
Depends: r-recommended (= 4.1.2-1.2004.0) but it is not going to be installed
Recommends: r-base-html but it is not
我正在使用lua和L ve2D开发一个小游戏,我用这段代码让我的角色跳转:
epsilon = 0.1
x,y = player.body:getLinearVelocity()
if math.abs(math.ceil(y)) < epsilon then cantJump = false else cantJump = true end
if love.keyboard.isDown(" ") and not cantJump then player.body:setLinearVelocity(0,-500) end
player.body:setAngle(0
我有个问题。
当我试图在GNU/Linux上这样做时:
traceroute -m 255 -I [the_ip]
那我就明白了:
192.0.0.1 (192.0.0.1) 6.788 ms 6.774 ms 6.781 ms
62.214.36.201 (62.214.36.201) 7.672 ms 7.869 ms 7.872 ms
62.214.37.202 (62.214.37.202) 12.351 ms 12.460 ms 12.467 ms
80.249.210.13 (80.249.210.13) 42.244 ms 42.202 ms 42.385
我正在尝试在我的ubuntu 14.04上安装R,在这方面我遇到了很多错误
当我运行r-base-core时,我得到了以下错误,请让我知道我必须做哪些更改才能安装这些损坏的软件包
dev@dev-OptiPlex-780:~$ sudo apt-get install r-base-core
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that
我在Pi上安装zfsutils时遇到了一个错误,升级到debian。
sudo apt install zfsutils-linux
The following packages have unmet dependencies: zfsutils-linux : Depends: libnvpair3linux (= 2.0.3-9~bpo10+1) but 2.0.3-9 is to be installed
Depends: libuutil3linux (= 2.0.3-9~bpo10+1) but 2.0.3-9 is to be install
我在Asp.net中创建了新的VS2017核心项目,并选择了对linux的docker支持。停靠文件如下所示
FROM microsoft/dotnet:2.1-aspnetcore-runtime AS base
WORKDIR /app
EXPOSE 80
FROM microsoft/dotnet:2.1-sdk AS build
WORKDIR /src
COPY ["WebApp2/WebApp2.csproj", "WebApp2/"]
RUN dotnet restore "WebApp2/WebApp2.csproj"
COPY