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To prevent a memory leak, the JDBC Driver has been forcibly unregistered

...s /lib. If you still keep it in webapp's /WEB-INF/lib, then you should manually register and deregister it using a ServletContextListener. Downgrade to Tomcat 6.0.23 or older so that you will not be bothered with those warnings. But it will silently keep leaking memory. Not sure if that's good to kn...
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How can I pair socks from a pile efficiently?

... enough (and faster). For each color of socks, form a pile. Iterate over all socks in your input basket and distribute them onto the color piles. Iterate over each pile and distribute it by some other metric (e.g. pattern) into the second set of piles Recursively apply this scheme until you have d...
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Memcached vs. Redis? [closed]

...re popular, and better supported than memcached. Memcached can only do a small fraction of the things Redis can do. Redis is better even where their features overlap. For anything new, use Redis. Memcached vs Redis: Direct Comparison Both tools are powerful, fast, in-memory data stores that are usef...
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Glorified classes in the Java language

... lot of different answers, so I thought it would be useful to collect them all (and add some): Classes AutoBoxing classes - the compiler only allows for specific classes Class - has its own literals (int.class for instance). I would also add its generic typing without creating new instances. Stri...
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JavaScript - Replace all commas in a string [duplicate]

...a.k.a. "global search"). The algorithm is simple: regular expression finds ALL matches (here commas) in the given string. More information about regular expressions in JavaScript you can find in MDN. – VisioN Nov 5 '15 at 8:37 ...
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C#: List All Classes in Assembly

I'd like to output (programmatically - C#) a list of all classes in my assembly. 2 Answers ...
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Database, Table and Column Naming Conventions? [closed]

... for Primary Key Columns, Hungarian-esque Constraint Prefixes and worst of all SPACES " " for multi-word table names. Additionally system tables for SQLServer use plurals so it seems AdventureWorks was the black sheep in this bunch. – Marcus Pope Mar 20 '12 at...
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Get a list of URLs from a site [closed]

I'm deploying a replacement site for a client but they don't want all their old pages to end in 404s. Keeping the old URL structure wasn't possible because it was hideous. ...
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What are the effects of exceptions on performance in Java?

Question: Is exception handling in Java actually slow? 18 Answers 18 ...
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Center/Set Zoom of Map to cover all visible Markers?

I am setting multiple markers on my map and I can set statically the zoom levels and the center but what I want is, to cover all the markers and zoom as much as possible having all markets visible ...