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一分钟读懂低功耗蓝牙(BLE) MTU交换数据包 - 创客硬件开发 - 清泛IT社区，...
... .... .1.. = Next Expected Sequence Number: 1
.... ..10 = LLID: Start of an L2CAP message or a complete L2CAP message with no fragmentation (0x2)
000. .... = RFU: 0
...0 0111 = Length: 7
3) L2CAP 长度
在BLE中，GA...
How to avoid reverse engineering of an APK file?
I am developing a payment processing app for Android, and I want to prevent a hacker from accessing any resources, assets or source code from the APK file.
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How can I add a class to a DOM element in JavaScript?
...n attribute, you can assign any string you like, even if it makes for invalid html
– Darko Z
Apr 29 '14 at 9:47
18
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Convert string to symbol-able in ruby
...ils got ActiveSupport::CoreExtensions::String::Inflections module that provides such methods. They're all worth looking at. For your example:
'Book Author Title'.parameterize.underscore.to_sym # :book_author_title
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Find the day of a week
...y names
c("Sunday", "Monday", "Tuesday", "Wednesday", "Thursday",
"Friday", "Saturday")[as.POSIXlt(df$date)$wday + 1]
## [1] "Wednesday" "Wednesday" "Thursday"
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How to get current date & time in MySQL?
...Create your 'servers' table as following :
CREATE TABLE `servers`
(
id int(11) NOT NULL PRIMARY KEY auto_increment,
server_name varchar(45) NOT NULL,
online_status varchar(45) NOT NULL,
_exchange varchar(45) NOT NULL,
disk_space varchar(45) NOT NULL,
network_sha...
Taking screenshot on Emulator from Android Studio
...tion but still, I don't know how to take a screenshot of Emulator via Android Studio. I recently switched from Eclipse to Android Studio and I could not find it anywhere, I tried to search on web too but no help.
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Print a list of all installed node.js modules
...ered Dec 21 '12 at 0:05
Andrey SidorovAndrey Sidorov
22.2k44 gold badges5656 silver badges7171 bronze badges
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Why does mongoose always add an s to the end of my collection name
...how adding a "s" makes the framework more intelligent, IMHO, that is a bad idea. Apart from that mongoose is an awesome framework.
– Roberto
Feb 12 '13 at 8:22
14
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Eclipse JUNO doesn't start
...'t really understand why. What is this .snap file?
– Ida
Feb 26 '13 at 4:29
1
I think ist kind of...