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What characters are allowed in an email address?

... not appear consecutively unless quoted (e.g. John..Doe@example.com is not allowed but "John..Doe"@example.com is allowed); space and "(),:;<>@[\] characters are allowed with restrictions (they are only allowed inside a quoted string, as described in the paragraph below, and in addition, a b...
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Set inputType for an EditText Programmatically?

How do we set the input type for an EditText programatically? I'm trying: 14 Answers 1...
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upstream sent too big header while reading response header from upstream

... to increase the proxy_buffer_size and the proxy_buffers, or disable it totally (Please read the nginx documentation). Example of proxy buffering configuration http { proxy_buffer_size 128k; proxy_buffers 4 256k; proxy_busy_buffers_size 256k; } Example of disabling your proxy buffer ...
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What's a good way to extend Error in JavaScript?

...nvironments set the stack property, but fileName and lineNumber are practically useless to be used in inheritance. So, the minimalistic approach is: function MyError(message) { this.name = 'MyError'; this.message = message; this.stack = (new Error()).stack; } MyError.prototype = new Er...
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What is the difference between a port and a socket?

...because a connection is identified by both its local and remote endpoints, allowing traffic to be routed to a specific service instance. There can only be one listener socket for a given address/port combination. Exposition This was an interesting question that forced me to re-examine a number of...
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How to convert an address into a Google Maps Link (NOT MAP)

... for posterity's sake. I wrote a short jQuery function that will automatically turn any <address> tags into Google maps links. See a demo here. $(document).ready(function () { //Convert address tags to google map links - Michael Jasper 2012 $('address').each(function () { var li...
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Stateless and Stateful Enterprise Java Beans

...s. If stateless session beans do not retain their state in between method calls, why is my program acting the way it is? 7 ...
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How to find out if you're using HTTPS without $_SERVER['HTTPS']

...PHP as a Fast-CGI application). Also, Apache 1.x servers (and broken installations) might not have $_SERVER['HTTPS'] defined even if connecting securely. Although not guaranteed, connections on port 443 are, by convention, likely using secure sockets, hence the additional port check. Additional n...
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Using 'return' in a Ruby block

... I had the same issue writing a DSL for a web framework in ruby... (the web framework Anorexic will rock!)... anyway, I dug into the ruby internals and found a simple solution using the LocalJumpError returned when a Proc calls return... it runs well in the tests so...
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Getting the location from an IP address [duplicate]

... You could download a free GeoIP database and lookup the IP address locally, or you could use a third party service and perform a remote lookup. This is the simpler option, as it requires no setup, but it does introduce additional latency. One third party service you could use is mine, http://...