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BLE协议—广播和扫描 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...用扫描和广播进行数据的传输（数据量不大，功耗要求较高的情况下），也可以在广播和扫描的基础上进行连接后点对点通信。
BLE协议—广播和扫描
版权声明：本文为博主原创文章，遵循 CC 4.0 BY-SA 版权协议，转载...
How to configure Git post commit hook
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I saw two possible solutions:
1: Changing my hook to:
curl --user name:passwd -s http://domain?token=whatevertokenuhave
2: setting project based authorization.
The former solutions has the disadvantage that I had to expose my passwd in the hook file. Unacceptable in my case.
The second works...
How do I monitor the computer's CPU, memory, and disk usage in Java?
...Network Interface info and metrics, Process Table information, Route info, etc.
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Why do x86-64 systems have only a 48 bit virtual address space?
...e IBM PC designated a section of that for memory mapped peripherals, BIOS, etc. Some other 8088/8086 designs (Zenith Z100, if memory serves) designated less for peripherals and such, and correspondingly more for application programs.
– Jerry Coffin
Jul 16 '11 a...
What do the terms “CPU bound” and “I/O bound” mean?
...cked by I/O, or input/output, such as reading or writing to disk, network, etc.
In general, when optimizing computer programs, one tries to seek out the bottleneck and eliminate it. Knowing that your program is CPU bound helps, so that one doesn't unnecessarily optimize something else.
[And by "b...
InputStream from a URL
...ll
private InputStream getInputStreamFromUrl(URL url, String user, String passwd) throws IOException {
String encoded = Base64.getEncoder().encodeToString((user + ":" + passwd).getBytes(StandardCharsets.UTF_8));
Map<String,String> httpHeaders=new Map<>();
httpHea...
What is an application binary interface (ABI)?
... an API. The API consists of data types/structures, constants, functions, etc that you can use in your code to access the functionality of that external component.
An ABI is very similar. Think of it as the compiled version of an API (or as an API on the machine-language level). When you write s...
Using ls to list directories and their total sizes
...1.3M Feb 18 00:18 icons
drwxrwsr-x 2 localusr www 8.0K Dec 27 01:23 passwd
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How to make a HTTP request using Ruby on Rails?
... @yagooar which is great, prevents malicious redirects like file:///etc/passwd
– gertas
Nov 17 '15 at 15:58
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How does BLAS get such extreme performance?
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Most arguments to the second question -- assembler, splitting into blocks etc. (but not the less than N^3 algorithms, they are really overdeveloped) -- play a role. But the low velocity of your algorithm is caused essentially by matrix size and the unfortunate arrangement of the three nested loops....