shapeless is (an exploration of) a type class and dependent type based generic (aka polytypic/polymorphic) programming library for Scala.

Use this tag for questions addressing particular features of the PHP framework symfony5. Otherwise use only the general [symfony] tag plus the language tag [php].

txt is the conventional filename extension of text files.

Python distinguishes between byte strings and unicode strings. *Decoding* transforms bytestrings to unicode; *encoding* transform unicode strings to bytes.

Multitasking is the apparent simultaneous execution of two or more tasks by a computer. Relevant implementation and usage details vary per operating system and programming language, so always add tags for both the OS and language when using this tag. Multitasking questions must be programming related.

ASCII stands for 'American Standard Code for Information Interchange'. ASCII is a character-encoding scheme based on the ordering of the English alphabet. Since ASCII only contains definitions for 128 characters, numerous other encoding schemes have been created to include characters from other alphabets and other symbols.

A recurrence relation is an equation that recursively defines a sequence, once one or more initial terms are given: each further term of the sequence is defined as a function of the preceding terms.

The C standard library consists of a set of sections of the ISO C standard which describe a collection of headers and library routines used to implement common operations, such as input/output and string handling, in the C programming language.

Knockout.js is an open source JavaScript library for dynamic HTML UIs using the Model-View-View Model (MVVM) pattern. This tag is for questions specific to the 2.0 releases.

Google Cloud ML Engine is a managed service that offers training and/or prediction services using Machine Learning models.

Currying is the process of transforming a function of multiple arguments into a function of one argument that returns another function, which takes one fewer argument than the original one. Languages such as Haskell use this as the default argument application mechanism, as it makes certain programming techniques, such as partial application, much easier.