updated README

README.md

@@ -36,5 +36,7 @@ Install the package using Cargo with the command <code>cargo install quickmath</
 ## Libraries
 
 - [evalexpr](https://crates.io/crates/evalexpr) — expression evaluator
+- [pico-args](https://crates.io/crates/pico_args) — argument parsing
+- [rustyline](https://crates.io/crates/rustyline) — input handler
 - [termion](https://crates.io/crates/termion) — ANSI formatting
 

src/context/helper.rs

@@ -45,7 +45,7 @@ pub fn logarithm(arg: &Value) -> EvalResult {
 		Value::Tuple(tuple)
 			=>	{
 				let len = tuple.len();
-				if len != 2 { return Err(EvalexprError::WrongOperatorArgumentAmount { expected: 2, actual: len }) }
+				if len != 2 { return Err(EvalexprError::wrong_function_argument_amount_range(len, 1..=2)); }
 
 				let i_value = tuple.get(0).unwrap();
 				if		let Value::Float(float)	= i_value { value = float.clone(); }

src/main.rs

@@ -14,6 +14,7 @@ use std::{
 use evalexpr::{
 	eval_with_context_mut,
 
+	ContextWithMutableVariables,
 	EvalexprError,
 	HashMapContext,
 	Value
@@ -83,6 +84,7 @@ fn main() {
 
 fn eval(expression: &str, context: &mut HashMapContext, quiet: bool) {
 	let result = eval_with_context_mut(expression, context);
+
 	if quiet {
 		if let Ok(result) = result { println!("{result}") }
 		else { exit(1) }