Suppose you need to read a CSV file and fix the data in one of the columns. Maybe a column has strings that may contain spaces and...

Grep is very useful, and you can call it from marcel, e.g. grep "def set_env *.py Running this in marcel's marcel/op directory yields:...

Marcel pipes carry streams of data between operators. In the same way that you find it useful to store lists or arrays or sets of objects...

Most interaction with marcel involves the execution of a pipeline. For example: ls -fr | select (f: now() - f.mtime < days(1)) ls...

Marcel pipes streams of tuples between operators. Relational databases operate on tables, which are sets of tuples, and queries yield...

Welcome to marcel! Marcel is yet another shell that pipes objects between commands, instead of strings. What is different about marcel is...