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BLE（四）嗅探工具 - 创客硬件开发 - 清泛IT社区，为创新赋能！
...都不够理想
0x2 商业侦听工具0x21 Frontline BPA® 600Frontline Test Equipment——“前线测试设备”（简称“前线”，Frontline），主要是针对各种各样的协议所做的一个“协议分析器”。“前线”系统的销售策略是“卖硬件，送软件”，而...
Is well formed without a ?
... is valid.
<!DOCTYPE html>
<html>
<head>
<title>test</title>
</head>
<body>
<input type='text' />
</body>
</html>
share
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improve th...
How to decide between MonoTouch and Objective-C? [closed]
...tive-C/IB way of doing things. So far, and I don't think I've sufficiently tested, but so far, MonoTouch is the winner here for how much less work you have to do.
Do you think it's fun to learn new languages and platforms? If so, the iPhone has a lot to offer, and Apple's stack will likely get you o...
Best way to do nested case statement logic in SQL Server
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Nice, I just tested to ensure that it short-circuits, and was suprised to find that it does. So if condition1 checked for a divide by zero, it appears that it's safe to do it in condition2. Not sure if this is guaranteed.
...
Make: how to continue after a command fails?
...orks for me where the leading dash does not (I'm given a makefile to run a test which needs to fail, and will parse the logs later)
– Sean Houlihane
Sep 6 '17 at 9:11
add a co...
php is null or empty?
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Tested and correct. ''==null (true) while ''===null(false)
– TheLegendaryCopyCoder
Jun 16 '18 at 13:52
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How do you redirect HTTPS to HTTP?
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This has not been tested but I think this should work using mod_rewrite
RewriteEngine On
RewriteCond %{HTTPS} on
RewriteRule (.*) http://%{HTTP_HOST}%{REQUEST_URI}
s...
Explicit vs implicit SQL joins
...g of the deprecated *= and =* operators vs. "outer join".
I have just now tested the two formats given, and they work properly on a SQL Server 2008 database. In my case they yielded identical execution plans, but I couldn't confidently say that this would always be true.
...
Get attribute name value of
...300k operations / second
JavaScript: 11,000k operations / second
You can test for yourself here. The "plain JavaScript" vesion is over 35 times faster than the jQuery version.
Now, that's just for one operation, over time you will have more and more stuff going on in your code. Perhaps for someth...
Integer to hex string in C++
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@MSalters - quite on the contrary. Test your suggestion on the int type ;)
– Kornel Kisielewicz
Feb 24 '11 at 10:13
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