title: Julia - Check if every character in string is lowercase or space
body: <p>How do I check if every character in a string is lowercase or space?</p>
  
  <pre><code>"this is all lowercase"   -&gt; true 
  "THIS is Some uppercase " -&gt; false 
  "HelloWorld  "             -&gt; false 
  "hello world"              -&gt; true
  </code></pre>