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开源MQTT网关：EMQX vs Mosquitto - 创客硬件开发 - 清泛IT社区，为创新赋能！
...由 IBM 和 Eurotech 于 2013 年开发，后来于 2016 年捐赠给 Eclipse 基金会。Eclipse Mosquitto 基于 Eclipse 公共许可证(EPL/EDL license)发布，用户可以免费使用。作为全球使用最广的 MQTT 协议实现之一 ，截至 2023 年 3 月，Mosquitto 的 GitHub Star 数...
How are strings passed in .NET?
...to set. You can't do strLocal[3] = 'H' in C# like you could with a C-style char array; you have to construct a whole new string instead. The only way to change strLocal is to point the reference at another string, and that means nothing you do to strLocal can affect strMain. The value is immutable, ...
HTTP could not register URL http://+:8000/HelloWCF/. Your process does not have access rights to thi
...machine or an the server or both ? andwhat should be used in http:// ? the ip of the client or the server ? As usual the help is useless
– GuidoG
Jul 10 '17 at 11:22
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How to choose an AES encryption mode (CBC ECB CTR OCB CFB)?
...eve me, I have seen many cases where CBC is not implemented with proper IV selection). So you will see that I have added bold when Rogaway says something like "confidentiality is not achieved when the IV is a nonce", it means that if you choose your IV cryptographically secure (unpredictable), then...
Why do I get “'property cannot be assigned” when sending an SMTP email?
...to the remote server"} {"The requested address is not valid in its context IP-ADDRESS:25"}error when I'm trying to connect to my SMTP server
– YuDroid
Dec 28 '16 at 10:16
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(-2147483648> 0) returns true in C++?
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@RichardJ.RossIII - with clang you are probably getting a 64-bit-typed literal, since it was too big to fit in an int. OP's implementation may not have a 64-bit type.
– Carl Norum
Feb 4 '1...
how do i remove a comma off the end of a string?
...sponding ltrim for left trim) is very useful as you can specify a range of characters to remove, i.e. to remove commas and trailing whitespace you would write:
$string = rtrim($string, ", \t\n");
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Is JavaScript a pass-by-reference or pass-by-value language?
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For any C programmers, think of char*. foo(char *a){a="hello";} does nothing, but if you do foo(char *a){a[0]='h';a[1]='i';a[2]=0;} it is changed outside because a is a memory location passed by value that references a string (char array). Passing stru...
When should one use a 'www' subdomain?
...nce to its web service?
What would you rather write/type/say.. "www." (4 chars) or "http://" (7 chars) ??
"www." is an established shorthand way of unambiguously communicating the fact that the subject is a web address, not a URL for another network service.
When verbally communicating a web add...
Type erasure techniques
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I would also consider (similar to void*) the use of "raw storage": char buffer[N].
In C++0x you have std::aligned_storage<Size,Align>::type for this.
You can store anything you want in there, as long as it's small enough and you deal with the alignment properly.
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