diff --git a/README.md b/README.md
index 9a811d7..b82f0b9 100644
--- a/README.md
+++ b/README.md
@@ -13,6 +13,7 @@ Bash library which provides utility functions and helpers for functional program
 - [Array](#array)
   - [array::contains()](#arraycontains)
   - [array::dedupe()](#arraydedupe)
+  - [array::is_empty()](#arrayis_empty)
   - [array::join()](#arrayjoin)
   - [array::reverse()](#arrayreverse)
   - [array::random_element()](#arrayrandom_element)
@@ -63,7 +64,7 @@ array::contains "c" ${array[@]}
 
 ### array::dedupe()
 
-Remove duplicate items from the array
+Remove duplicate items from the array.
 
 #### Example
 
@@ -87,6 +88,26 @@ a b c
 
 - Deduplicated array.
 
+### array::is_empty()
+
+Check if a given array is empty.
+
+#### Example
+
+```bash
+array=("a" "b" "c" "d")
+array::is_empty "${array[@]}"
+```
+
+#### Arguments
+
+- **$1** (array): Array to be checked.
+
+#### Exit codes
+
+- **0**: If the given array is empty.
+- **2**: If the given array is not empty.
+
 ### array::join()
 
 Join array elements with a string.
diff --git a/bin/shdoc.awk b/bin/bashdoc.awk
similarity index 100%
rename from bin/shdoc.awk
rename to bin/bashdoc.awk
diff --git a/bin/generate_readme.sh b/bin/generate_readme.sh
index ac4d34f..641a702 100755
--- a/bin/generate_readme.sh
+++ b/bin/generate_readme.sh
@@ -117,8 +117,8 @@ _setup_tempfile() {
 
 _generate_shdoc() {
     declare file
-    file="$(realpath $1)"
-    ./shdoc.awk < "${file}" >> "$2"
+    file="$(realpath "${1}")"
+    ./bashdoc.awk < "${file}" >> "$2"
 }
 
 _insert_shdoc_to_file() {
@@ -132,7 +132,7 @@ _insert_shdoc_to_file() {
 
     sed -i "1s/^/${info_shdoc}\n/" "${shdoc_tmp_file}"
 
-    if grep --color=always -Pzl "(?s)${start_shdoc}.*\n.*${end_shdoc}" $source_markdown &> /dev/null; then
+    if grep --color=always -Pzl "(?s)${start_shdoc}.*\n.*${end_shdoc}" "${source_markdown}" &> /dev/null; then
         # src https://stackoverflow.com/questions/2699666/replace-delimited-block-of-text-in-file-with-the-contents-of-another-file
 
         sed -i -ne "/${start_shdoc}/ {p; r ${shdoc_tmp_file}" -e ":a; n; /${end_shdoc}/ {p; b}; ba}; p" "${source_markdown}"
@@ -179,13 +179,13 @@ _generate_toc() {
         temp_output=$output"$level- [$title](#$anchor)\n"
         counter=1
         while true; do
-            nlines="$(echo -e $temp_output | wc -l)"
-            duplines="$(echo -e $temp_output | sort | uniq | wc -l)"
-            if [ $nlines = $duplines ]; then
+            nlines="$(echo -e "${temp_output}" | wc -l)"
+            duplines="$(echo -e "${temp_output}" | sort | uniq | wc -l)"
+            if [ "${nlines}" = "${duplines}" ]; then
                 break
             fi
             temp_output=$output"$level- [$title](#$anchor-$counter)\n"
-            counter=$(($counter + 1))
+            counter=$((counter + 1))
         done
 
         output="$temp_output"
@@ -195,8 +195,7 @@ _generate_toc() {
     done <<< "$(grep -E "^#{${MINLEVEL},${MAXLEVEL}} " "${1}" | tr -d '\r' | sed "s/^#\{$((${MINLEVEL} - 1))\}//g")"
 
     # when in toc we have two `--` quit one
-    output="$(echo "$output" | sed 's/--*/-/g')"
-
+    output="${output//--*/-}"
     echo "$output"
 
 }
@@ -247,8 +246,8 @@ _process_toc() {
     sed '/```/,/```/d' "${source_markdown}" > "${toc_temp_file}"
 
     declare level=$MINLEVEL
-    while [[ $(grep -E "^#{$level} " "${toc_temp_file}" | wc -l) -le 1 ]]; do
-        level=$(($level + 1))
+    while [[ $(grep -Ec "^#{$level} " "${toc_temp_file}") -le 1 ]]; do
+        level=$((level + 1))
     done
 
     MINLEVEL=${level}
diff --git a/src/array.sh b/src/array.sh
index 9177e72..13b5f8d 100644
--- a/src/array.sh
+++ b/src/array.sh
@@ -29,7 +29,7 @@ array::contains() {
     return 1
 }
 
-# @description Remove duplicate items from the array
+# @description Remove duplicate items from the array.
 #
 # @example
 #   array=("a" "b" "a" "c")
@@ -54,6 +54,25 @@ array::dedupe() {
     printf '%s\n' "${arr_unique[@]}"
 }
 
+# @description Check if a given array is empty.
+#
+# @example
+#   array=("a" "b" "c" "d")
+#   array::is_empty "${array[@]}"
+#
+# @arg $1 array Array to be checked.
+#
+# @exitcode 0 If the given array is empty.
+# @exitcode 2 If the given array is not empty.
+array::is_empty() {
+    declare -a array
+    local array=("$@")
+    if [ ${#array[@]} -eq 0 ]; then
+        return 0
+    else
+        return 1
+    fi
+}
 # @description Join array elements with a string.
 #
 # @example