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How do you use the ? : (conditional) operator in JavaScript?
... = 'Hello ' + (username || 'guest');
This is Javascripts equivallent of PHP's shorthand ternary operator ?:
Or even:
var welcomeMessage = 'Hello ' + (username || something || maybethis || 'guest');
It evaluates the variable, and if it's false or unset, it goes on to the next.
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Get Insert Statement for existing row in MySQL
...
I wrote a php function that will do this. I needed to make an insert statement in case a record needs to be replaced after deletion for a history table:
function makeRecoverySQL($table, $id)
{
// get the record
$sel...
How to change href of tag on button click through javascript
...Link").onclick = function() {
document.getElementById("abc").href="xyz.php";
return false;
};
</script>
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How to select from subquery using Laravel Query Builder?
...ading what I write. Nothing is escaped when you call toSql. Read about PDO php.net/manual/en/book.pdo.php and see the result of your $query->toSql()
– Jarek Tkaczyk
Sep 23 '15 at 6:47
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Making git auto-commit
...at it needed to do a pull on the code. All that was needed to handle it in php was:
<?
$r = $_GET['r'];
if (!empty($c)) {
//use system instead of exec if you want the output to go back to the git client
exec("cd /path/to/repo/parent/$r; sudo git reset --hard HEAD; sudo git pull;");
e...
App Inventor 2 低功耗蓝牙(BLE) 硬件接入、数据通信及IO控制 - App Invent...
...tor 2 中文网VIP会员免费享有基础版技术支持服务，有任何问题都可以在线及时得到解决，是创客学习App Inventor 2 必备之利器，欢迎体验！
来自中文网文档：https://www.fun123.cn/reference/iot/ble.html
可以获得到广播数据吗?可以获...
How to find out element position in slice?
...fits your needs. At the lowest level the 'find value=x in array' function (PHP, Python or whatever) will look somewhat like the version given in the OP's question - at a low level. Loops are central to this kind of programming, even if they are hidden. Go does not hide this stuff.
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App Inventor 2 低功耗蓝牙(BLE) 硬件接入、数据通信及IO控制 · App Inventor 2 中文网
...tor 2 中文网VIP会员免费享有基础版技术支持服务，有任何问题都可以在线及时得到解决，是创客学习App Inventor 2 必备之利器，欢迎体验！
您的改进建议 联系方式： 不需要回复的可留...
How to prevent buttons from submitting forms
...xample: on a Login ... with some restrictions... like not allow to be used PHP sessions and neither cookies are allowed!
So any link must be converted to such form submit, so the login data is not lost.
When no login is yet done, it must also work. So no validation must be performed on links.
But I...
比尔盖茨“未来生活预言”的科技豪宅（图） - 资讯 - 清泛网 - 专注C/C++及内核技术
...、中东石油大王，俄罗斯能源寡头……只要是钱能解决的问题，以上这些人都能解决。但世界上总也一些事是无法用钱来解决的，比如说知识，比如说艺术。
比尔·盖茨最自豪的还是他的私人图书馆，这是一座圆顶建筑，...