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App Inventor 2 BLE扩展源码分析 - WriteBytes vs WriteStrings 23字节硬编...
...(extension/bluetoothle 分支)
关键文件：
- BluetoothLE.java（2975行）-- 公开API层
- BluetoothLEint.java（3165行）-- 内部实现层
二、核心发现：23字节硬编码限制
2.1 WriteStrings 的写入路径
位于 BLEWriteOperation.write() 方法第678-690行：
if...
Is there a REAL performance difference between INT and VARCHAR primary keys?
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Bill KarwinBill Karwin
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3
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Check if PHP session has already started
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Recommended way for versions of PHP >= 5.4.0 , PHP 7
if (session_status() == PHP_SESSION_NONE) {
session_start();
}
Reference: http://www.php.net/manual/en/function.session-status.php
For versions of PHP < 5.4.0
if(session_id() == '') {
session_sta...
Font scaling based on width of container
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Sublime 3 - Set Key map for function Goto Definition
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edited Jun 26 '14 at 18:35
MattDMo
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answer...
PHP date() format when inserting into datetime in MySQL
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edited Jul 7 at 5:46
John
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answered F...
npm can't find package.json
I'm trying to install the dependencies of some example: npm's express 2.5.8 that I've downloaded, but all of the apps throw the same error:
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Redirect STDERR / STDOUT of a process AFTER it's been started, using command line?
.../null", 0), 2)
detach
quit
e.g.:
$ tail -f /var/log/lastlog &
[1] 5636
$ ls -l /proc/5636/fd
total 0
lrwx------ 1 myuser myuser 64 Feb 27 07:36 0 -> /dev/pts/0
lrwx------ 1 myuser myuser 64 Feb 27 07:36 1 -> /dev/pts/0
lrwx------ 1 myuser myuser 64 Feb 27 07:36 2 -> /dev/pts/0
lr-...
'Microsoft.SqlServer.Types' version 10 or higher could not be found on Azure
...trying to make a webapi in ASP.NET MVC 4. The webapi used Entity Framework 5 Spatial types and i have wrote a very simple code.
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Can't install Ruby under Lion with RVM – GCC issues
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553
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