Generate ID from UUID

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This is a method to generate a long id in the positive space. There are few issues to consider with this method – UUID is 16 bytes / 128 bits – Long is 8 bytes / 64 bits This means that we will loose some information, if we don’t want to lose that we could […]

Configuring Java JDK on Ubuntu

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This is an easy way to configure java on a linux box, all this information is available online. First we need to obtain the build. sudo wget Extract from tar sudo tar xzvf jdk-7u75-linux-x64.gz Create symbolic link so we can later update the version sudo ln -s /opt/jdk1.7.0_75/ /opt/java we edit the /etc/profile and […]

Tokenizing/splitting string in c++

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This method uses strtok to tokeninze our string given a specific delimeter, results of that are put into supplied vector. There are few other ways we can do this but this one is straight forward. #include <iostream> #include <string> #include <string.h>   #include <memory> #include <stdlib.h> #include <stdio.h> #include <list> #include <vector>   using namespace […]