tk

tk is my Guile toolkit.
Each unit contains a group of tools I commonly used together or with a particular module.

make; sudo make install Will install source files to (%site-dir) and compiled versions to (%site-ccache-dir). All units are installed under a folder named tk/ and so are imported using (use-modules (tk <unit>)).

short.scm

Aliases for only the most common names. I use this literally everywhere
(string->symbol) => (ss>)
(symbol->string) => (ss<)
(ssa>) appends strings into a symbol

listlogic.scm

Various logical tools. Especially useful for handling map and fold where a default path is required.

(display-if-not) Displays a given string if the first argument is #f
(flatten) De-nests lists into a form where no (car) contains a list
(lp&) Tests some predicate pairwise over two lists
(l&) Tests the equality according to eq? over two lists, returns as a list all passing elements
(if-some) The common (if var var) pattern
(if-some-else) The common (if var var default) pattern

mcron.scm

Constants and functions for working with time, schedules and mcron.

sec/min sec/hour sec/day sec/week
Useful constants
sec/mins sec/hours sec/days sec/weeks
Readable shortcuts, (sec/mins 4) rather than (* 4 60) or worse 240
(step-from)
Normalize a time to be the next step sized increment from a base time
(str->secs) (strf->secs)
Converts a date string into seconds
(current-date-string) (yesterday-date-string)
Returns the date as a string for logging purposes

ports.scm

Convenience when working with ports and parsers.
(port-rewind!)