Huge work; i'm too tired to write commit message for all of it. Pleez let me sleep acouple of hours. Made most tests work. Started SBC.

stdlib/io.sld

@@ -0,0 +1,16 @@
+import sld:std:*;
+
+class fd {
+	str read();
+	str read(int n);
+
+	int write(str data);
+}
+
+class stdio {
+	str readln();
+
+	void print(*args);
+
+	void println(*args);
+}

stdlib/std.sld

@@ -0,0 +1,117 @@
+class void {}
+
+class bool {
+	castable to int;
+
+	bool operator !;
+}
+
+class int {
+	castable to bool;
+	castable to float;
+
+	int operator +;
+	int operator -;
+	int operator ~;
+
+	int operator +int;
+	int operator -int;
+	int operator *int;
+	int operator //int;
+	int operator **int;
+	int operator <<int;
+	int operator >>int;
+	int operator &int;
+	int operator ^int;
+	int operator |int;
+
+	range operator to int;
+
+	int popcount();
+	int length(int base=2);
+}
+
+class float {
+	float operator +;
+	float operator -;
+	bool operator !;
+
+	float operator +float;
+	float operator -float;
+	float operator *float;
+	float operator /float;
+	int operator //float;
+	float operator **float;
+
+	int round();
+	bool isint();
+}
+
+class char {
+	castable to str;
+
+	bool operator !;
+
+	char operator +char;
+	char operator +int;
+	char operator -char;
+	char operator -int;
+	char operator *int;
+
+	range operator 'to' char;
+}
+
+class str {
+	bool operator !;
+
+	iterable char;
+
+	char operator [int];
+
+	str operator +str;
+	str operator *int;
+}
+
+class range {
+	typename type;
+
+	iterable type;
+
+	type operator [int];
+}
+
+class list {
+	typename type;
+
+	iterable type;
+
+	type operator [int];
+
+	void append(type item);
+
+	void insert(int index, type item);
+
+	type pop();
+	type pop(int index);
+
+	void reverse();
+
+	void sort();
+}
+
+class tuple {
+	typename types[];
+
+	iterable types;
+
+	types operator [int];
+}
+
+class function {
+	typename argtypes[];
+	typename rettype;
+
+	call rettype (*argtypes);
+
+	rettype map(iterable);
+}