for in less

forin.less

// usage:

@badge-colors: blue #7FB3D4, gray #767676, green #8CC079, red #b35d5d;

.make-classes(badge, @badge-colors);

// impl.:

.make-classes(@prefix, @list) {
    .iter(length(@list));
    .iter(@i) when (@i > 0) {
        .iter(@i - 1);
        @pair:  extract(@list, @i); 
        @key:   extract(@pair, 1);
        @value: extract(@pair, 2); 
        .@{prefix}-@{key} {
            color: @value;  
        }
    }
}


// conver to =>

.badge-blue {
  color: #7FB3D4;
}
.badge-gray {
  color: #767676;
}
.badge-green {
  color: #8CC079;
}
.badge-red {
  color: #b35d5d;
}