Memoization is a specific form of caching that involves caching the return value of a function based on its parameters. Caching is a more general term; for example, HTTP caching is caching but not memoization. Wikipedia says: Although related to caching, memoization refers to a specific case of this optimization, distinguishing it from forms of … Read more
From Wikipedia (granularity): Granularity is the extent to which a system is broken down into small parts, either the system itself or its description or observation. It is the extent to which a larger entity is subdivided. For example, a yard broken into inches has finer granularity than a yard broken into feet. Coarse-grained systems … Read more
A callback URL will be invoked by the API method you’re calling after it’s done. So if you call POST /api.example.com/foo?callbackURL=http://my.server.com/bar Then when /foo is finished, it sends a request to http://my.server.com/bar. The contents and method of that request are going to vary – check the documentation for the API you’re accessing.
An IDE is an integrated development environment – a suped-up text editor with additional support for developing (such as forms designers, resource editors, etc), compiling and debugging applications. e.g Eclipse, Visual Studio. A Library is a chunk of code that you can call from your own code, to help you do things more quickly/easily. For … Read more
To summarize the link Jon posted1 in case it ever goes down, “SAM” stands for “single abstract method”, and “SAM-type” refers to interfaces like Runnable, Callable, etc. Lambda expressions, a new feature in Java 8, are considered a SAM type and can be freely converted to them. For example, with an interface like this: public … Read more
A stub is a controllable replacement for an Existing Dependency (or collaborator) in the system. By using a stub, you can test your code without dealing with the dependency directly. External Dependency – Existing Dependency: It is an object in your system that your code under test interacts with and over which you have no … Read more
Orthogonality is the property that means “Changing A does not change B”. An example of an orthogonal system would be a radio, where changing the station does not change the volume and vice-versa. A non-orthogonal system would be like a helicopter where changing the speed can change the direction. In programming languages this means that … Read more
I don’t think they’re interchangeable. They are frequently similar, but differences do exist, and seems to mainly be in what they are contrasted with and what is relevant in context. Scalars are typically contrasted with compounds, such as arrays, maps, sets, structs, etc. A scalar is a “single” value – integer, boolean, perhaps a string … Read more
Searches should include Wikipedia, which is surprisingly good for a number of programming concepts/terms such as Application Programming Interface: What is an API? An application programming interface (API) is a particular set of rules (‘code’) and specifications that software programs can follow to communicate with each other. It serves as an interface between different software … Read more
Check “The folder metaphor” section at Wikipedia. It states: There is a difference between a directory, which is a file system concept, and the graphical user interface metaphor that is used to represent it (a folder). For example, Microsoft Windows uses the concept of special folders to help present the contents of the computer to … Read more