Builds a class string, concatenates a class string, out of a list of:

• Strings;
• Atoms;
• Keyword lists or maps where the keys are the CSS class and the values are treated as booleans for conditional inclusion of the class.

All nil, false and duplicated values are filtered out.

Examples

iex> cx(["foo", "bar"])
"foo bar"

iex> cx([foo: false, bar: true])
"bar"

iex> cx([[a: true, b: false], [c: false, d: true]])
"a d"

iex> cx(["one", :two])
"one two"

iex> cx(yes: true, no: false)
"yes"

iex> cx(%{"a" => true, b: false})
"a"

iex> cx(t: "I'm truthy", f: nil)
"t"

iex> cx([[[nil, false, "hello", :world]]])
"hello world"