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使用App Inventor 2 控制物联网设备/低功耗蓝牙设备(BLE) · App Inventor 2 中文网
...接。 因此，我们开发蓝牙 LE 组件是为了解决物联网连接问题。
三． 技术方法
BluetoothLE 组件是 MIT App Inventor 的新颖补充。 如图 4 所示，在 MIT App Inventor 平台上创建时，BLE 组件可以作为移动应用程序的一部分实现。 然后，该...
Find the last element of an array while using a foreach loop in PHP
...t being said, you don't -have- to iterate over an "array" using foreach in php.
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Implications of foldr vs. foldl (or foldl')
...gregate, Smalltalk's inject:into:, PHP's array_reduce, Mathematica's Fold, etc. Common Lisp's reduce defaults to left fold but there's an option for right fold.
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PHP prepend associative array with literal keys?
... See also array_merge() and its difference from using the + operator: br.php.net/manual/en/function.array-merge.php#92602
– Havenard
Sep 3 '09 at 1:33
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Get week of year in JavaScript like in PHP
How do I get the current weeknumber of the year, like PHP's date('W') ?
19 Answers
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What does new self(); mean in PHP?
...ParentClass -- i.e. here too, the class in which it is written.
With PHP < 5.3, that "the class in which it is written" is important -- and can sometimes cause problems.
That's why PHP 5.3 introduces a new usage for the static keyword : it can now be used exactly where we used self in thos...
Finding the PHP File (at run time) where a Class was Defined
Is there any reflection/introspection/magic in PHP that will let you find the PHP file where a particular class (or function) was defined?
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Get $_POST from multiple checkboxes
...ck_list'][]).
Here's a little sample as requested:
<form action="test.php" method="post">
<input type="checkbox" name="check_list[]" value="value 1">
<input type="checkbox" name="check_list[]" value="value 2">
<input type="checkbox" name="check_list[]" value="value...
pass post data with window.location.href
...any sensitive / personal data (i.e names, addresses, emails addresses, DOB etc) in either of these.
Session Storage is a more secure option for anything sensitive, it's only accessible to the origin that set the items and also clears as soon as the browser / tab is closed.
IndexDB is a littl...
Why is === faster than == in PHP?
Why is === faster than == in PHP?
11 Answers
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