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Get the client's IP address in socket.io

...it logs on git hub to figure this one out, but the following code does actually work for me now: var io = require('socket.io').listen(server); io.sockets.on('connection', function (socket) { var address = socket.handshake.address; console.log('New connection from ' + address.address + ':' + ad...
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Can anyone explain CreatedAtRoute() to me?

...ss CompanyController : Controller { private ICompanyRepository _companyRepository; public CompanyController(ICompanyRepository companyRepository) { _companyRepository = companyRepository; } [HttpGet("{id}", Name="GetCompany")] public ...
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What is the difference between exit(0) and exit(1) in C?

...ccessful program termination & it is fully portable, While exit(1) (usually) indicates unsucessful termination. However, it's usage is non-portable. Note that the C standard defines EXIT_SUCCESS and EXIT_FAILURE to return termination status from a C program. 0 and EXIT_SUCCESS are the values s...
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Generating v5 UUID. What is name and namespace?

...1. Only 128-bits are available and 5 bits are used to specify the type, so all of the hash bits don't make it into the UUID. (Also MD5 is considered cryptographically broken, and SHA1 is on its last legs, so don't use this to verify data that needs to be "very secure"). That said, it gives you a wa...
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通过FastCGI Cache实现服务降级 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...,架构图如下: Degradation 实现的关键点在于通过error_page处理异常,并且完成服务降级: limit_conn_zone $server_name zone=perserver:1m; error_page 500 502 503 504 = @failover; fastcgi_cache_path /tmp levels=1:2 keys_zone=failover:100m i...
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Update multiple columns in SQL

... Woo answer below. – Hilary Aug 24 '16 at 10:59 add a comment  |  ...
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Add up a column of numbers at the Unix shell

... . . .| x=$(echo <(cat)); echo $((0+${x// /+}+0)) if you want all bash all the time: – qneill Apr 3 '15 at 23:31 ...
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SVN Commit specific files

... Sure. Just list the files: $ svn ci -m "Fixed all those horrible crashes" foo bar baz graphics/logo.png I'm not aware of a way to tell it to ignore a certain set of files. Of course, if the files you do want to commit are easily listed by the shell, you can use that: ...
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Center image in div horizontally [duplicate]

.../* for the img inside your div */ display: block; margin: 0 auto; That's all. Note, that you'll also have to set an initial min-width for your outer div. share | improve this answer | ...
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How to get a substring between two strings in PHP?

...ieves that. I do not want to think about regex (well, I could do one but really don't think it's the best way to go). Thinking of strpos and substr functions. Here's an example: ...