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How to loop through an array containing objects and access their properties
...n JavaScript:
1. Just loop through an array
const myArray = [{x:100}, {x:200}, {x:300}];
myArray.forEach((element, index, array) => {
console.log(element.x); // 100, 200, 300
console.log(index); // 0, 1, 2
console.log(array); // same myArray object 3 times
});
Note: Array.prototy...
How do CSS triangles work?
...r-color: yellow blue red green;
border-style: solid;
border-width: 200px 200px 200px 200px;
height: 0px;
width: 0px;
}
which gives you this:
But there's no need for the top border, so set its width to 0px. Now our border-bottom of 200px will make our triangle 200px tall.
.trian...
Passing a dictionary to a function as keyword parameters
...f myfunc(a=1, b=2):
In[2]: print(a, b)
In[3]: mydict = {'a': 100, 'b': 200}
In[4]: myfunc(**mydict)
100 200
A few extra details that might be helpful to know (questions I had after reading this and went and tested):
The function can have parameters that are not included in the dictionary
Yo...
How can you program if you're blind?
...oped to make things such as the form designer more accessible.
For C and C++ programming I use cygwin with gcc as my compiler and emacs or vim as my editor depending on what I need to do. A lot of my internship involved programming for Z/OS. I used an rlogin session through Cygwin to access the US...
How can I check if a URL exists via PHP?
...
Or follow all redirects and return the last code?
You might end up with a 200, but it could redirect using meta tags or javascript. Figuring out what happens after is tough.
Keep in mind that whatever method you use, it takes time to wait for a response.
All code might (and probably will) halt unt...
How to find the array index with a value?
...
You can use indexOf:
var imageList = [100,200,300,400,500];
var index = imageList.indexOf(200); // 1
You will get -1 if it cannot find a value in the array.
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problem with and :after with CSS in WebKit
...mage: url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' version='1.1' height='10px' width='15px'%3E%3Ctext x='0' y='10' fill='gray'%3E%E2%96%BE%3C/text%3E%3C/svg%3E");
background-repeat: no-repeat;
background-size: 1.5EM 1EM;
background-position: right center...
LINUX 磁盘掉电修复故障一列 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...磁盘柜。磁盘柜突然掉电， LINUX启动报磁盘错误在光标处输入系统的密码进入SHELL输入fsck -y dev sda3修复完成reboot 系统虚拟机环境，挂磁盘柜。磁盘柜突然掉电， LINUX启动报磁盘错误
在光标处输入系统的密码
进入SHELL
...
mac os下如何获得root权限？ - 更多技术 - 清泛网 - 专注C/C++及内核技术
...：1.打开实用工具 －> 终端2.键入sudo passwd root 然后提示你输入当前登录用户密码，通过以后，提示你输入两遍root的密码。...操作步骤：
1.打开实用工具 －> 终端
2.键入sudo passwd root 然后提示你输入当前登录用户密码，通过以后...
Java 调用外部进程 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...百般无奈之下上网搜了搜，归结起来问题就处在异常流和输入流上。网上所列举的方法，或者首先读入异常流，再读入输入流，或者启不同的线程，分别读取异常流和输入流。
经过自己的实验，在jdk1.6.0和Windows XP SP3下测试的...