I wish IDE’s would offer refactoring to convert something like:

int len;
while ((len = read()) > 0) {
    // business operation
}

into

int len = read(); 
while (len > 0) {
    // business operation
    len = read(); 
}

Nowadays I don’t think the inline modification bothers me as much as before but I still like to have the option of easily refactor it with a click of the button (or keyboard).