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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！
文章源自：https://www.gandalf.site/2018/11/ble_26.html
商业级的Ellisys BEX400侦听工具最为符合对BLE流量捕获及分析的要求，然而售价过于昂贵；
其次，作为开源硬件且配有混杂模式追踪的“超牙”设备——Ubertooth One拥有二次开发和嗅...
Change Image of ImageView programmatically in Android
When I change the image programmatically, it shows new image on top of the old image which is set originally in layout file?
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How do you clear a stringstream variable?
... library types the member function empty() is a query, not a command, i.e. it means "are you empty?" not "please throw away your contents".
The clear() member function is inherited from ios and is used to clear the error state of the stream, e.g. if a file stream has the error state set to eofbit (...
Is it possible to preview stash contents in git?
... a few weeks later, I want to inspect the stash, and find out what changes it would make if I applied it to working tree in its current state.
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SQL Server SELECT INTO @variable?
...u cannot SELECT .. INTO .. a TABLE VARIABLE. The best you can do is create it first, then insert into it. Your 2nd snippet has to be
DECLARE @TempCustomer TABLE
(
CustomerId uniqueidentifier,
FirstName nvarchar(100),
LastName nvarchar(100),
Email nvarchar(100)
);
INSERT INTO
@Temp...
MySQL Cannot Add Foreign Key Constraint
...to add Foreign Key constraints to my database as a project requirement and it worked the first time or two on different tables, but I have two tables on which I get an error when trying to add the Foreign Key Constraints.
The error message that I get is:
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How to get a substring between two strings in PHP?
...not want to think about regex (well, I could do one but really don't think it's the best way to go). Thinking of strpos and substr functions.
Here's an example:
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How do you uninstall all dependencies listed in package.json (NPM)?
... package.json file defined in my application root and run npm install -g it will install all the dependencies defined in package.json, globablly.
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Is there an easy way to strike through text in an app widget?
I was wondering if there is an easy way to strike text within an app widget in Android. In a normal activity, it is pretty easy, using textview flags:
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Extract only right most n letters from a string
... this. If s?he only wants the number at the end of the string, that's definitely the most painless solution, especially when the number of digits may vary in some later software upgrade.
– Joey
Nov 12 '09 at 14:10
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