Added isfield translation function

R/isfield.R

@@ -0,0 +1,9 @@
+#' @title Checks if a list contains a field
+#' @description This function tries to replicate the behavior of the `isfield`
+#' function in Matlab
+#' @param x list
+#' @param field name of field
+#' @references https://se.mathworks.com/help/matlab/ref/isfield.html
+isfield <- function(x, field) {
+    field %in% names(x)
+}

man/isfield.Rd

@@ -0,0 +1,20 @@
+% Generated by roxygen2: do not edit by hand
+% Please edit documentation in R/isfield.R
+\name{isfield}
+\alias{isfield}
+\title{Checks if a list contains a field}
+\usage{
+isfield(x, field)
+}
+\arguments{
+\item{x}{list}
+
+\item{field}{name of field}
+}
+\description{
+This function tries to replicate the behavior of the `isfield`
+function in Matlab
+}
+\references{
+https://se.mathworks.com/help/matlab/ref/isfield.html
+}