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iPhone app signing: A valid signing identity matching this profile could not be found in your keycha

...utton "Renew". After renewing and downloading updated provisioning profile all seems to work as expected, so problem is definitely solved :) Update: you may have to contact Apple to get a "Renew"-button, or they removed it -- and the solution is to just download it and add it to the keychain, no ne...
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When to use static vs instantiated classes

...r BB code to HTML ; it doesn't have a life on its own) (Yeah, I admit, really really overly-simplified...) One thing about static methods/classes is that they don't facilitate unit testing (at least in PHP, but probably in other languages too). Another thing about static data is that only one in...
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Android Studio marks R in red with error message “cannot resolve symbol R”, but build succeeds

In every project I've tried to create in Android Studio, all usages of R are marked in red with the error message "cannot resolve symbol R", but the compilation succeeds and the application runs. This is really annoying, as it blocks auto-completion and shows huge red waved lines all over my code. ...
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Django Server Error: port is already in use

... A more simple solution just type sudo fuser -k 8000/tcp. This should kill all the processes associated with port 8000. EDIT: For osx users you can use sudo lsof -t -i tcp:8000 | xargs kill -9 share | ...
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How do I get the size of a java.sql.ResultSet?

...ng about them to others, regardless of whether they are static or not. Actually creating an instance of the object and calling the method is implied. – laz Oct 10 '08 at 18:23 51 ...
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What is a “translation unit” in C++

... A translation unit is for all intents and purposes a file (.c/.cpp), after it's finished including all of the header files. http://msdn.microsoft.com/en-us/library/bxss3ska%28VS.80%29.aspx ...
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Invoking a jQuery function after .each() has completed

In jQuery, is it possible to invoke a callback or trigger an event after an invocation of .each() (or any other type of iterative callback) has completed . ...
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How can I remove specific rules from iptables?

... If you have several rules of a kind, it will not remove all of them. – ETech Mar 27 '14 at 8:22 4 ...
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What is the relative performance difference of if/else versus switch statement in Java?

...ic interface Action { void execute(String input); } And get hold of all implementations in some Map. You can do this either statically or dynamically: Map<String, Action> actions = new HashMap<String, Action>(); Finally replace the if/else or switch by something like this (leav...
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Select data from date range between two dates

... As you can see, there are two ways to get things done: enlist all acceptable options exclude all wrong options Obviously, second way is much more simple (only two cases against four). Your SQL will look like: SELECT * FROM Product_sales WHERE NOT (From_date > @RangeTill OR To_d...