r2evans

#' Pattern-matching tryCatch
#'
#' Catch only specific types of errors at the appropriate level.
#' Supports nested use, where errors not matched by inner calls will
#' be passed to outer calls that may (or may not) catch them
#' separately.
#'
#' @details
#'
#' Exception handling with a little finer control over *where* a

r2evans

#' 'Reduce' with arbitrary number of arguments
#'
#' Applies a function to the corresponding elements of given vectors,
#' in a reductionist way. (This is *not* related to the [Apache Hadoop
#' MapReduce](https://hadoop.apache.org/) project ... while this may
#' suggest the name 'MapReduce' is a poor choice for this function, it
#' is a logical combination of R's [Map()] and [Reduce()] functions.)
#'
#' @details
#'

r2evans

#!/bin/bash

# changing a single repo with subdirs like this:
#
#   origrepo
#   +-- subdir1
#   +-- subdir2
#
# into a different/new repo with rearranged dirs (and discarded files),
# editing the full history

r2evans

#' Wrap a frame across multiple columns
#'
#' https://stackoverflow.com/a/52669757/3358272
#' @param x `data.frame`
#' @param nr,nc `integer`; specify only one of these, the number of
#'   rows or columns to be fixed
#' @param rownames if `NULL` (default), row names (if found) are
#'   discarded; if `character`, then a column is added (on the left of
#'   `x`) with this as its title
#' @param byrow `logical`; if `FALSE`, the first column will match the

r2evans

#' Mid-pipe assertions
#'
#' Test assertions mid-pipe. Each assertion is executed individually
#' on each group (if present) of the piped data. Any failures indicate
#' the group that caused the fail, terminating on the first failure.
#'
#' If `.debug`, then the interpreter enters the `browser()`, allowing
#' you to look at the specific data, stored as `x` (just the grouped
#' data if `is.grouped_df(.x)`, all data otherwise). If the data is
#' changed, then the altered data will be sent forward in the pipeline

r2evans

;;; my-align.el
;; Copyright (c) 2017 Bill Evans (r2evans)
;;
;; Author: Bill Evans
;; Created: 2017 Aug 03
;; Keywords: code align programming

;;; Commentary:
;; Simple wrapper wround 'align-regexp' with sane defaults.
;; Based on code first seen here

r2evans

#' Sequential file naming
#'
#' (https://stackoverflow.com/a/44868545/3358272)
#'
#' @param ptn string that includes a [base::sprintf()] format string for an
#'   integer, either `%d` or `%03d`; for example, `"filename-%03d.pdf"`
#' @param full.names logical, passed to [base::files()]
#' @return character, representing a filename that did not exist the
#'   moment the function was called; NB: there is a potential
#'   race-condition here