Self-tutoring about Windows: the tutor mentions a search he was pleased with. The other day I wanted to search a directory for files that weren’t jpg. I imagined keying “not .jpg” into the search bar, but that sounded perhaps too …
Self-tutoring about computer science: the tutor mentions the idea of a tuple. A tuple, as I understand, is a sequence of values that, together, mean something. The reason I’d say a tuple is a sequence is that the values are …
Self-tutoring about software engineering: the tutor mentions the distinction between functional and non-functional requirements. In software engineering, functional requirements describe the input and output of the software. Non-functional requirements may define such things as the operating system the software is …
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Self-tutoring about software modeling: the tutor mentions sequence diagrams. Sequence diagrams show the communication among objects within a system. Typically the activity starts from top left: the time axis is downward, while the “object axis” reaches rightward. Objects are represented …
Self-tutoring about computer science: the tutor mentions a distinction he heard decades ago. In computer science, inputs a function takes can be called parameters. If, by a function’s operation, one of its parameters gets changed in way that’s observable outside …
Computer science: pass by reference vs by value, part 1 Read more »
Self-tutoring about calling methods in object-oriented programming: the tutor mentions an error. Sometimes one might mean to chain methods such as new_ob=f1().f2().f3() but get an error like “the function f2 has no attribute f3”. Such an error might happen because …
Self-tutoring about software development models: the tutor mentions the waterfall model. In software development, a process model may also be referred to as a software development life cycle model. It generally refers to the steps of the development process itself. …
Self-tutoring about computer science: the tutor mentions the idea of a stub. In programming, a stub is a function that, when called, returns a value of the expected type so that the calling function can continue running. Being a stub …
Self-tutoring about Docker and containers: the tutor mentions the idea of image vs container. As I understand, an image is built by following instructions from a Dockerfile. The image is a software structure that contains all dependencies, etc., needed to …
Self-tutoring about computer science: the tutor mentions a comparison that might come to mind. One often hears about containers and virtual machines. Both technologies offer the premise of a controlled environment within a larger computer system. As I understand, a …