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Java String array: is there a size of method?
I come from a php background and in php, there is an array_size() function which tells you how many elements in the array are used.
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Match everything except for specified strings
...ems, my @result3 = grep { /\S/ } split /red|green|blue/, $text; (see demo)
php - preg_split('~red|green|blue~', $text) or preg_split('~red|green|blue~', $text, -1, PREG_SPLIT_NO_EMPTY) to output no empty items (see demo)
python - re.split(r'red|green|blue', text) or, to remove empty items, list(filt...
Save PL/pgSQL output from PostgreSQL to a CSV file
... statement, because there is no way of connecting the input/output stream. PHP's PostgreSQL handler (not PDO) includes very basic pg_copy_from and pg_copy_to functions which copy to/from a PHP array, which may not be efficient for large data sets.
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Prefer composition over inheritance?
...ifference, it's easier to explain.
Procedural Code
An example of this is PHP without the use of classes (particularly before PHP5). All logic is encoded in a set of functions. You may include other files containing helper functions and so on and conduct your business logic by passing data around i...
10 款进阶综合应用：业务流程与硬件接入 · App Inventor 2 中文网
...后勤登记故障、分派负责人、处理工单、验收和重新打开问题。 流程与源码
车辆养护档案
为家庭或小车队记录车辆里程、保养周期、费用和历史，及时找到需要保养的车辆。 流程与源码
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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...
load and execute order of scripts
...he script has been loaded and executed.
To test this fact:
// file: test.php
sleep(10);
die("alert('Done!');");
// HTML file:
<script type="text/javascript" src="test.php"></script>
Dynamically added scripts are executed as soon as they are appended to the document.
To test this fa...
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...
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，...
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...