Declare lambda functions easily (Haxe 2.10).

EasyLambda.hx

import haxe.macro.Expr;
class EasyLambda {
    @:macro public static function f(p:Expr, e:Expr) : Expr {
        var res:Expr = macro function(a) {return $e;};
       	var params = macro $p;
       	var pname = 
       	switch (params.expr) {
       		case EConst(i):switch (i) {
       			case CIdent(v): v;
       			default: null;
       		};
       		default: null;
       	};
        switch (res.expr) {
        	case EFunction(name,f):
        		f.args[0].name = pname; 
        	default:null;
        }
    	return res;
    }
    static function main() {
        trace(f(a,a+5)(1));
        var add = f(a,f(b,a+b));
        trace(add(1)(2));
    }
}