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Deploying my application at the root in Tomcat

...couple of options: Remove the out-of-the-box ROOT/ directory from tomcat and rename your war file to ROOT.war before deploying it. Deploy your war as (from your example) war_name.war and configure the context root in conf/server.xml to use your war file : <Context path="" docBase="war_name" de...
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Evaluating a mathematical expression in a string

...ppend(toks[0]) def pushUMinus(self, strg, loc, toks): if toks and toks[0] == '-': self.exprStack.append('unary -') def __init__(self): """ expop :: '^' multop :: '*' | '/' addop :: '+' | '-' integer :: ['+' | '-'] '0'..'9'+ ...
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Always pass weak reference of self into block in ARC?

...am a little confused about block usage in Objective-C. I currently use ARC and I have quite a lot of blocks in my app, currently always referring to self instead of its weak reference. May that be the cause of these blocks retaining self and keeping it from being dealloced ? The question is, sho...
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Fatal Error: Allowed Memory Size of 134217728 Bytes Exhausted (CodeIgniter + XML-RPC)

...ion. Please don't do that. Your PHP code may have a memory leak somewhere and you are telling the server to just use all the memory that it wants. You wouldn't have fixed the problem at all. If you monitor your server, you will see that it is now probably using up most of the RAM and even swapping...
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Convert a binary NodeJS Buffer to JavaScript ArrayBuffer

... Instances of Buffer are also instances of Uint8Array in node.js 4.x and higher. Thus, the most efficient solution is to access the buf.buffer property directly, as per https://stackoverflow.com/a/31394257/1375574. The Buffer constructor also takes an ArrayBufferView argument if you need to ...
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Why can't C++ be parsed with a LR(1) parser?

I was reading about parsers and parser generators and found this statement in wikipedia's LR parsing -page: 6 Answers ...
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How to handle code when app is killed by swiping in android?

If my app is running and i press home button, the app goes in background. Now if a long press the home button and kill the app by swiping it from the recent app list, none of the events like onPause() , onStop() or onDestroy() gets called rather the process is terminated. So if i want my servic...
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What is the difference between an ORM and an ODM?

I am trying to figure out what the difference is between ORM and ODM, as far as I understand the concept, ORM (Object Relational Mapper) maps the relations between data, where as ODM (Object Document Mapper) deals with documents. Am I right in assuming that mySQL is an example of ORM and MongoDB is ...
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In Python, how do I determine if an object is iterable?

... in our code as well for this purpose, but I've lately started to get more and more annoyed by objects which only have __getitem__ being considered iterable. There are valid reasons to have __getitem__ in a non-iterable object and with them the above code doesn't work well. As a real life example we...
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Why do we use __init__ in Python classes?

I am having trouble understanding the Initialization of classes. 8 Answers 8 ...