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Get all unique values in a JavaScript array (remove duplicates)
... ECMAScript 5 you can use the native filter method of an Array in the following way to get an array with unique values:
function onlyUnique(value, index, self) {
return self.indexOf(value) === index;
}
// usage example:
var a = ['a', 1, 'a', 2, '1'];
var unique = a.filter(onlyUnique);
consol...
Why does Clojure have “keywords” in addition to “symbols”?
... Is that it? Typing : rather than ' doesn't seem like a big win, especially since : is an extra keypress on most keyboards.
– Laurence Gonsalves
Oct 6 '09 at 19:29
1...
How to execute XPath one-liners from shell?
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Xidel (0..8.win32.zip) shows up as having malware on Virustotal. So try at your own risk virustotal.com/#/file/…
– JGFMK
May 9 '18 at 13:17
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IN vs OR in the SQL WHERE Clause
...
I assume you want to know the performance difference between the following:
WHERE foo IN ('a', 'b', 'c')
WHERE foo = 'a' OR foo = 'b' OR foo = 'c'
According to the manual for MySQL if the values are constant IN sorts the list and then uses a binary search. I would imagine that OR evaluates t...
Override compile flags for single files
...-Wno-effc++ after -Weffc++ in the compiler command, and the latter setting wins. To see the full command and check that this is indeed the case, you can do
make VERBOSE=1
As an aside, one of the maintainers of the GNU C++ Standard Library presents a pretty negative opinion on -Weffc++ in this an...
全国最美古镇大盘点 还有哪些你没去过 - 杂谈 - 清泛网 - 专注C/C++及内核技术
...，也充满了缠绵往事。时光让古镇变得沧桑，却装点了她的韵味悠长，让来来往往的过客，一遍一遍去想象她曾经的风姿绰约和灿...古镇，浸透了时光，也充满了缠绵往事。时光让古镇变得沧桑，却装点了她的韵味悠长，让来来...
前有网易喂猪，后有宜信养牛 - 资讯 - 清泛网 - 专注C/C++及内核技术
...你见过互联网公司喂猪，可见过金融公司养牛吗？宜信做的事情是俯下身去，把手弄脏，真正服务到客户，对于金融公司原有的矜持，早已抛去九霄...你见过互联网公司喂猪，可见过金融公司养牛吗？宜信做的事情是俯下身去，...
How to get relative path from absolute path
... solution is simply to return the full absolute target path instead of throwing that exception.
– Nyerguds
Feb 4 '16 at 20:31
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用Javascript获取页面元素的位置（全） - 更多技术 - 清泛网 - 专注C/C++及内核技术
用Javascript获取页面元素的位置（全）制作网页的过程中，你有时候需要知道某个元素在网页上的确切位置。下面的教程总结了Javascript在网页定位方面的相关知识。一、网页的大小和...制作网页的过程中，你有时候需要知道某个...
What is the difference between concurrent programming and parallel programming?
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@BoppityBop Just because I can say in a drawing what he said in a novel doesn't make my answer less correct. Just easier to read for those who actually don't know the answer. Which I guess is the point of coming here. You can write a book in the language used by this ...