So from my understanding indirection would be something like this. SIP URL) CS519 Hierarchy revisited The DNS name is like a series of name to address lookups za.b.com: lookup NS for com, then for b, then A record for a.
Rough as in getting familiar with a huge codebase that has been cooking for a year and a half and, being mild here, could have received a little bit more care before.
#Another layer of indirection code
Instead of going through the codebase and changing API code that deals with raw sequelize users all over the place, it's done in one place. Data mappers act as a single location for object transformations.
#Another layer of indirection software
Reading the actual definition of indirection, "the ability to reference something using a name, reference, or container instead of the value itself." Presentation Layer - anything that provides the interaction of your software system to a client/consumer. Lately, I have been going through a rough coding patch. The DTOs act as a layer of indirection and shield the clients from internal changes to the way the API is resolved.
I came across the "Fundamental theorem of software engineering" while reading a textbook, whose quote is this, "We can solve any problem by introducing an extra level of indirection." Indirection refers to operating on a higher level of abstraction by implementing indirection such as dynamic dispatch or creating object hierarchies in object oriented programming.
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