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What is the effect of extern “C” in C++?

...very compiler is required to provide "C" linkage A linkage specification shall occur only in namespace scope All function types, function names and variable names have a language linkage See Richard's Comment: Only function names and variable names with external linkage have a language linkage Two ...
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How to call a SOAP web service on Android [closed]

I am having a lot of trouble finding good information on how to call a standard SOAP/WSDL web service with Android. All I've been able to find are either very convoluted documents and references to "kSoap2" and then some bit about parsing it all manually with SAX . OK, that's fine, but it's 2008, s...
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What is time_t ultimately a typedef to?

...IX-compliant systems implement the time_t type as a signed integer (typically 32 or 64 bits wide) which represents the number of seconds since the start of the Unix epoch: midnight UTC of January 1, 1970 (not counting leap seconds). Some systems correctly handle negative time values, w...
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How to make a cross-module variable?

...as if a global from any other module that includes __builtin__ -- which is all of them, by default. a.py contains print foo b.py contains import __builtin__ __builtin__.foo = 1 import a The result is that "1" is printed. Edit: The __builtin__ module is available as the local symbol __builtin...
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Is there a way to access method arguments in Ruby?

... "#{arg} = #{eval arg}" }.join(', ') Note: since this answer was originally written, in current versions of Ruby eval can no longer be called with a symbol. To address this, an explicit to_s has been added when building the list of parameter names i.e. parameters.map { |arg| arg[1].to_s } ...
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What is the difference between save and insert in Mongo DB?

... Save Vs Insert : In your given examples, the behavior is essentially the same. save behaves differently if it is passed with an "_id" parameter. For save, If the document contains _id, it will upsert querying the collection on the _id field, If not, it will insert. If a document does not...
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Android Game Keeps Getting Hacked [closed]

...d someone hacks it and puts it up on a mirror. We setup Google Alerts for all our apps, so we get told daily who's doing the hacking. So far, we have implemented the licensing service as Google has suggested, our salt is randomly made each time the license is initiated with the unique device ID. ...
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Dynamically load JS inside JS [duplicate]

...se my own implementation of it like: jQuery.loadScript = function (url, callback) { jQuery.ajax({ url: url, dataType: 'script', success: callback, async: true }); } and use it like: if (typeof someObject == 'undefined') $.loadScript('url_to_someScript.js...
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How to implement a good __hash__ function in python [duplicate]

... are equal. It also shouldn't change over the lifetime of the object; generally you only implement it for immutable objects. A trivial implementation would be to just return 0. This is always correct, but performs badly. Your solution, returning the hash of a tuple of properties, is good. But note...
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How do I calculate the date in JavaScript three months prior to today?

...ch 31st the same day as one month before March 28th, 3 days earlier? This all depends on what you mean by "one month before". Go have a conversation with your product owner. If you want to do like momentjs does, and correct these last day of the month errors by moving to the last day of the month...