R/global_memory.r

In grunwaldlab/poppr: Genetic Analysis of Populations with Mixed Reproduction

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#
# This software was authored by Zhian N. Kamvar and Javier F. Tabima, graduate 
# students at Oregon State University; Jonah C. Brooks, undergraduate student at
# Oregon State University; and Dr. Nik Grünwald, an employee of USDA-ARS.
#
# Permission to use, copy, modify, and distribute this software and its
# documentation for educational, research and non-profit purposes, without fee, 
# and without a written agreement is hereby granted, provided that the statement
# above is incorporated into the material, giving appropriate attribution to the
# authors.
#
# Permission to incorporate this software into commercial products may be
# obtained by contacting USDA ARS and OREGON STATE UNIVERSITY Office for 
# Commercialization and Corporate Development.
#
# The software program and documentation are supplied "as is", without any
# accompanying services from the USDA or the University. USDA ARS or the 
# University do not warrant that the operation of the program will be 
# uninterrupted or error-free. The end-user understands that the program was 
# developed for research purposes and is advised not to rely exclusively on the 
# program for any reason.
#
# IN NO EVENT SHALL USDA ARS OR OREGON STATE UNIVERSITY BE LIABLE TO ANY PARTY 
# FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING
# LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, 
# EVEN IF THE OREGON STATE UNIVERSITY HAS BEEN ADVISED OF THE POSSIBILITY OF 
# SUCH DAMAGE. USDA ARS OR OREGON STATE UNIVERSITY SPECIFICALLY DISCLAIMS ANY 
# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND ANY STATUTORY 
# WARRANTY OF NON-INFRINGEMENT. THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS"
# BASIS, AND USDA ARS AND OREGON STATE UNIVERSITY HAVE NO OBLIGATIONS TO PROVIDE
# MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. 
#
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#==============================================================================#
# Distance Matrix Storage Function
#
# Helper function used to store data between function calls.
#
# @param v used in \code{.last.value$set(v)} to store object v
# 
# @return a list like \code{.last.value.dist} and
#  \code{.last.value.param} with attributes $set(v) and $get()
#  which store data globally, allowing access between function calls.
#
# Public functions utilizing this function:
# # mlg.filter
#
# Internal functions utilizing this function:
# # none
# 
#==============================================================================#
.last.value <- function(){
  last_value <- NULL
  list(
    get = function() {last_value},
    set = function(v) {last_value <<- v }
  )
}
.last.value.dist <- .last.value()
.last.value.param <- .last.value()