C++ - Anonymous namespace
The main reason of using anonymous namespace in C++ is to localize declaration in translation unit.\ The compiler will choose the unique name for unnamed nam...
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Spring - afterPropertiesSet needed to be called
The static initializer block is only executed when the class is loaded by the class loader. There is no instance of that class at that moment and you will on...
Cassandra - Allow Filtering example
1 2 3 4 5 6 7 create table User( email text, name text, desc text, user_id uuid PRIMARY KEY((email), name, user_id) ) WITH CLUSTERING ORD...
Cassandra - Partition Key, Clustering key
Partition Key: It will be hashed and saved across nodes.\ Clustering Key: It will group in the same partition key.
Spring - adding a bean in code
1 2 3 AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext(); Set<int> sets = new Set<int>(); ctx.getBeanF...