TLorentzVector constructor

this is a copy and paste from: http://root.cern.ch/phpBB3/viewtopic.php?f=3&t=15470&sid=7883219728eb49a8fcdbc973430a47e7&p=66500#p66500

refer to it for additional details:

Hello, today I spent a lot of time to find this bug in my program: I have a function

CODE: SELECT ALL
void function(const TLorentzVector v);

but for some reson I was calling it with
CODE: SELECT ALL
function(integer_value);

it was very difficult because the compiler didn't tell me anything. In fact I found that an integer can be converted to a TLorentzVector

CODE: SELECT ALL
TLorentzVector a;
a = 1.2;

is this a feature? Do we need it? I think it is dangerous