diff --git a/src/util.cpp b/src/util.cpp
new file mode 100644
index 0000000..b51e3b0
--- /dev/null
+++ b/src/util.cpp
@@ -0,0 +1,47 @@
+#include "util.h"
+
+vector<size_t> findAll(const string& data, const string& toSearch){
+	vector<size_t> indices;
+
+	size_t pos = data.find(toSearch);
+
+	while (pos != string::npos){
+		indices.push_back(pos);
+
+		pos = data.find(toSearch, pos + toSearch.size());
+	}
+
+	return indices;
+}
+
+void removeAll(string& data, const string& toRemove) {
+	vector<size_t> indices = findAll(data, toRemove);
+	std::sort(indices.rbegin(), indices.rend());
+	for (size_t &i : indices)
+		data.erase(i, toRemove.size());
+}
+
+vector<string> split(const string& data, const char c){
+	vector<string> parts;
+	size_t start = 0;
+	for (size_t i : findAll(data, std::string(1, c))){
+		parts.push_back(data.substr(start, i - start));
+		start = i + 1;
+	}
+	parts.push_back(data.substr(start));
+	return parts;
+}
+
+bool isDigit(char c, uint8_t& result){
+	auto val = c - '0';
+	if (val >= 0 && val < 10){
+		result = val;
+		return true;
+	}
+	return false;
+}
+
+bool isDigit(char c){
+	auto val = c - '0';
+	return val >= 0 && val < 10;
+}
\ No newline at end of file
diff --git a/src/util.h b/src/util.h
index 20c1636..c64eec6 100644
--- a/src/util.h
+++ b/src/util.h
@@ -20,37 +20,12 @@ using std::string, std::vector, std::pair, std::map;
 using std::list, std::set, std::unordered_set;
 using std::priority_queue;
 
-inline vector<size_t> findAll(const string& data, const string& toSearch){
-	vector<size_t> indices;
-
-	size_t pos = data.find(toSearch);
-
-	while (pos != string::npos){
-		indices.push_back(pos);
-
-		pos = data.find(toSearch, pos + toSearch.size());
-	}
-
-	return indices;
-}
-
-inline void removeAll(string& data, const string& toRemove) {
-	vector<size_t> indices = findAll(data, toRemove);
-	std::sort(indices.rbegin(), indices.rend());
-	for (size_t &i : indices)
-		data.erase(i, toRemove.size());
-}
-
-inline bool isDigit(char c, uint8_t& result){
-	auto val = c - '0';
-	if (val >= 0 && val < 10){
-		result = val;
-		return true;
-	}
-	return false;
-}
-
-inline bool isDigit(char c){
-	auto val = c - '0';
-	return val >= 0 && val < 10;
-}
\ No newline at end of file
+vector<size_t> findAll(const string& data, const string& toSearch);
+
+void removeAll(string& data, const string& toRemove);
+
+vector<string> split(const string& data, char c);
+
+bool isDigit(char c, uint8_t& result);
+
+bool isDigit(char c);
\ No newline at end of file