diff --git a/lib/solidity/coder.js b/lib/solidity/coder.js
index f0c62d5..4c8335a 100644
--- a/lib/solidity/coder.js
+++ b/lib/solidity/coder.js
@@ -25,22 +25,10 @@ var utils = require('../utils/utils');
 var f = require('./formatters');
 var SolidityParam = require('./param');
 
-/**
- * Should be used to check if a type is an array type
- *
- * @method isArrayType
- * @param {String} type
- * @return {Bool} true is the type is an array, otherwise false
- */
-var isArrayType = function (type) {
-    return type.slice(-2) === '[]';
-};
-
 /**
  * SolidityType prototype is used to encode/decode solidity params of certain type
  */
 var SolidityType = function (config) {
-    this._mode = config.mode;
     this._inputFormatter = config.inputFormatter;
     this._outputFormatter = config.outputFormatter;
 };
@@ -56,44 +44,6 @@ SolidityType.prototype.isType = function (name) {
     throw "this method should be overrwritten!";
 };
 
-/**
- * Should be used to transform plain param to SolidityParam object
- *
- * @method formatInput
- * @param {Object} param - plain object, or an array of objects
- * @param {Bool} arrayType - true if a param should be encoded as an array
- * @return {SolidityParam} encoded param wrapped in SolidityParam object 
- */
-SolidityType.prototype.formatInput = function (param, arrayType) {
-    if (utils.isArray(param) && arrayType) { // TODO: should fail if this two are not the same
-        var self = this;
-        return param.map(function (p) {
-            return self._inputFormatter(p);
-        }).reduce(function (acc, current) {
-            return acc.combine(current);
-        }, f.formatInputInt(param.length)).withOffset(32);
-    } 
-    return this._inputFormatter(param);
-};
-
-//SolidityType.prototype.totalOffset = function (value, name) {
-    //if (this.isDynamicArray(name)) {
-        //var nestedName = this.nestedName(name);
-        //var self = this;
-        //return value.reduce(function (acc, current) {
-            //return acc + self.totalOffset(current, nestedName);
-        //}, 64); // add pointer to data && length of data
-    //} else if (this.isStaticArray(name)) {
-        //var nestedName = this.nestedName(name);
-        //var self = this;
-        //return value.reduce(function (acc, current) {
-            //return acc + self.totalOffset(current, nestedName);
-        //}, 0);
-    //}
-
-    //return this.staticPartLength(name);
-//};
-
 SolidityType.prototype.encode = function (value, name) {
     if (this.isDynamicArray(name)) {
         var length = value.length;                          // in int
@@ -193,18 +143,6 @@ SolidityCoder.prototype._requireType = function (type) {
     return solidityType;
 };
 
-/**
- * Should be used to transform plain param of given type to SolidityParam
- *
- * @method _formatInput
- * @param {String} type of param
- * @param {Object} plain param
- * @return {SolidityParam}
- */
-SolidityCoder.prototype._formatInput = function (type, param) {
-    return this._requireType(type).formatInput(param, isArrayType(type));
-};
-
 /**
  * Should be used to encode plain param
  *
@@ -370,7 +308,6 @@ SolidityCoder.prototype.getSolidityTypes = function (types) {
 };
 
 var SolidityTypeAddress = function () {
-    this._mode = 'value';
     this._inputFormatter = f.formatInputInt;
     this._outputFormatter = f.formatOutputAddress;
 };
@@ -430,7 +367,6 @@ SolidityTypeAddress.prototype.formatOutput = function (param, unused, name) {
 };
 
 var SolidityTypeBool = function () {
-    this._mode = 'value';
     this._inputFormatter = f.formatInputBool;
     this._outputFormatter = f.formatOutputBool;
 };
@@ -451,7 +387,6 @@ SolidityTypeBool.prototype.decode = function (bytes, offset, type) {
 };
 
 var SolidityTypeInt = function () {
-    this._mode = 'value';
     this._inputFormatter = f.formatInputInt;
     this._outputFormatter = f.formatOutputInt;
 };
@@ -468,7 +403,6 @@ SolidityTypeInt.prototype.staticPartLength = function (name) {
 };
 
 var SolidityTypeUInt = function () {
-    this._mode = 'value';
     this._inputFormatter = f.formatInputInt;
     this._outputFormatter = f.formatOutputUInt;
 };
@@ -485,7 +419,6 @@ SolidityTypeUInt.prototype.staticPartLength = function (name) {
 };
 
 var SolidityTypeDynamicBytes = function () {
-    this._mode = 'bytes';
     this._inputFormatter = f.formatInputDynamicBytes;
     this._outputFormatter = f.formatOutputDynamicBytes;
 };
@@ -502,7 +435,6 @@ SolidityTypeDynamicBytes.prototype.isType = function (name) {
 };
 
 var SolidityTypeBytes = function () {
-    this._mode = 'value';
     this._inputFormatter = f.formatInputBytes;
     this._outputFormatter = f.formatOutputBytes;
 };
@@ -519,7 +451,6 @@ SolidityTypeBytes.prototype.staticPartLength = function (name) {
 };
 
 var SolidityTypeString = function () {
-    this._mode = 'bytes';
     this._inputFormatter = f.formatInputString;
     this._outputFormatter = f.formatOutputString;
 };
@@ -536,7 +467,6 @@ SolidityTypeString.prototype.staticPartLength = function (name) {
 };
 
 var SolidityTypeReal = function () {
-    this._mode = 'value';
     this._inputFormatter = f.formatInputReal;
     this._outputFormatter = f.formatOutputReal;
 };
@@ -553,7 +483,6 @@ SolidityTypeReal.prototype.staticPartLength = function (name) {
 };
 
 var SolidityTypeUReal = function () {
-    this._mode = 'value';
     this._inputFormatter = f.formatInputReal;
     this._outputFormatter = f.formatOutputUReal;
 };