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How to find all serial devices (ttyS, ttyUSB, ..) on Linux without opening them?
...t(devicedir.c_str(), &st)==0 && S_ISLNK(st.st_mode)) {
char buffer[1024];
memset(buffer, 0, sizeof(buffer));
// Append '/driver' and return basename of the target
devicedir += "/driver";
if (readlink(devicedir.c_str(), buffer, sizeof(buffer)) >...
Representational state transfer (REST) and Simple Object Access Protocol (SOAP)
...ocol (SOAP):
SOAP builds an XML protocol on top of HTTP or sometimes TCP/IP.
SOAP describes functions, and types of data.
SOAP is a successor of XML-RPC and is very similar, but describes a standard way to communicate.
Several programming languages have native support for SOAP, you typically feed ...
What is the difference between a URI, a URL and a URN?
...does weird stuff like checking equality of URLs by resolving host names to IP addresses (which seems at odds with RFC 3986 sec 6 in the first place, and breaks w virtual hosts). I think this just means the Java Standard Library has some inconsistent class behavior.
– Andrew Jan...
How to write a large buffer into a binary file in C++, fast?
...stream("file.binary", std::ios::out | std::ios::binary);
myfile.write((char*)&data[0], bytes);
myfile.close();
auto endTime = std::chrono::high_resolution_clock::now();
return std::chrono::duration_cast<std::chrono::milliseconds>(endTime - startTime).count();
}
long long ...
NASM x86汇编入门指南 - C/C++ - 清泛网 - 专注C/C++及内核技术
... message: db ‘Hello world!’ ;相当于char/unsigned char* Hello world!
msglength: equ 12 ; 字符串长度12字节
buffersize: dw 1024 ;缓冲区大小1024个字长(相当于short类型)
.bss sect...
Difference between __str__ and __repr__?
...nambiguous — notice that str(3)==str("3"). Likewise, if you implement an IP abstraction, having the str of it look like 192.168.1.1 is just fine. When implementing a date/time abstraction, the str can be "2010/4/12 15:35:22", etc. The goal is to represent it in a way that a user, not a programmer,...
Are there other whitespace codes like   for half-spaces, em-spaces, en-spaces etc useful in HTML
...g space : &#160; or &nbsp;
narrow no-break space : &#8239; (no character reference available)
en space : &#8194; or &ensp;
em space : &#8195; or &emsp;
3-per-em space : &#8196; or &emsp13;
4-per-em space : &#8197; or &emsp14;
6-per-em space : &#8198; ...
How to create a memory leak in Java?
...ring, if the string is a substring, the leak is even worse (the underlying char[] is also leaked) - in Java 7 substring also copies the char[], so the later doesn't apply; @Daniel, no needs for votes, though.
I'll concentrate on threads to show the danger of unmanaged threads mostly, don't wish t...
搭建高可用mongodb集群（二）—— 副本集 - 大数据 & AI - 清泛网 - 专注C/...
...节点成为主节点。
Hidden:这类节点是不能够被客户端制定IP引用，也不能被设置为主节点，但是可以投票，一般用于备份数据。
Delayed：可以指定一个时间延迟从primary节点同步数据。主要用于备份数据，如果实时同步，误删除数...
In Functional Programming, what is a functor?
.... Looking around on the web has provided either excessively technical descriptions (see the Wikipedia article ) or incredibly vague descriptions (see the section on Functors at this ocaml-tutorial website ).
...