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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 Invent...
...；非AT开头是透传数据：
这里仅演示了需求硬件状态、MAC地址的指令，当然不同厂商会提供不同的AT指令，具体可查看厂商提供的硬件说明书。BLE设备角色主要分为两种角色，主机（Master或Central）和从机（Peripheral），当主机和...
What is the difference between a “line feed” and a “carriage return”?
... feed the line while the carriage is still moving.
– Maciej Stachowski
Apr 15 '15 at 10:31
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What is Objective C++? [closed]
...probable classes).
Yes, you can use this language in Xcode to develop for Mac OS X, iPhone/iPodTouch, iPad. It works very well.
You don't have to do anything weird in your project to use Objective-C++. Just name your Objective-C files with the extension .mm (instead of .m) and you are good to go.
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Where does PHP's error log reside in XAMPP?
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For me (macOS), the error log path lives inside the vm (which took me an embarassingly long time to realise). I only know how to access via the xampp control panel terminal, with a path of: /opt/lampp/logs/php_error_log
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Undo git mv (rename)
...tory is empty,, only git reset --hard did the job.
– mac13k
Jun 20 at 18:09
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Generating UML from C++ code? [closed]
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BoUML (bouml.fr) is available for Linux, Windows and Mac.
– Rhubbarb
Jul 18 '12 at 12:04
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Where is the Keytool application?
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keytool is part of the standard java distribution.
In a windows 64-bit machine, you would normally find the jdk at
C:\Program Files\Java\jdk1.8.0_121\bin
It is used for managing keys and certificates you can sign things with, in your case, probably a jar file.
If you provide more details of ...
Word wrapping in phpstorm
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phpStorm for Mac v10.0: PhpStorm > Preferences > Editor > Use Soft wraps in Editor (as opposed to under the File menu)
– bullcitydave
Nov 9 '15 at 18:09
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How to check if NSString begins with a certain character
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This might help? :)
http://developer.apple.com/mac/library/documentation/Cocoa/Reference/Foundation/Classes/NSString_Class/Reference/NSString.html#//apple_ref/occ/instm/NSString/characterAtIndex:
Just search for the character at index 0 and compare it against the value y...
how perform grep operation on all files in a directory
...ing on:
find . -name "*.sql" -exec grep -H "slow" {} \;
Note, the -H is mac-specific, it shows the filename in the results.
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