Simple FreeMarker random number generator

Posted on by

FreeMarker doesn’t have a random number generator function. I needed a really simple solution that would allow me to pick a random image URL to be displayed on the homepage.

<#--
* Generates a "random" integer between min and max (inclusive)
*
* Note the values this function returns are based on the current
* second the function is called and thus are highly deterministic
* and SHOULD NOT be used for anything other than inconsequential
* purposes, such as picking a random image to display.
-->
<#function rand min max>
  <#local now = .now?long?c />
  <#local randomNum = _rand +
    ("0." + now?substring(now?length-1) + now?substring(now?length-2))?number />
  <#if (randomNum > 1)>
    <#assign _rand = randomNum % 1 />
  <#else>
    <#assign _rand = randomNum />
  </#if>
  <#return (min + ((max - min) * _rand))?round />
</#function>
<#assign _rand = 0.36 />

I’ve added this function to the FreeMarker Spring extensions I’ve been building up. You might use it in your code like so:

<img src="<@spring.url "/images/" + springx.rand(1, 10) + ".jpg" />" />

Note that there are obvious issues with this function. Aside from being based heavily on the second the function is called, you’ll notice that the min and max have less probability of being generated as the other values…what? I said it was simple.

827 thoughts on “Simple FreeMarker random number generator”

  3. Wow! This website is absolutely great! The selection of tranny porn videos is unbelievable
    – tons of gorgeous trans girls in crystal-clear scenes.
    The streaming is fast and flawless and new content are added every day.

    If you’re want to watch shemale on shemale porn videos featuring beautiful performers
    and raw action, this is hands down the best spot. Strongly recommended!

  5. Grow your website traffic with our AI-powered service, delivering targeted visitors at a fraction of the cost of paid ads. Contact us to start growing your audience.

    https://marketingaged.com/

  14. Our AI-optimized solution sends targeted visitors based on keywords and locations to your site, outperforming paid ads without the high cost. Reach out to see the difference.

    https://marketingaged.com/

  17. Wow! This site is seriously great! The library of
    shemale on shemale porn videos is
    massive – so many sexy trans girls in crystal-clear scenes.

    The loading is super smooth and new content
    are added frequently.
    If you’re want to watch shemale porn videos featuring seductive performers and raw action, this
    is definitely the best spot. Strongly recommended!

  20. Some nice points there. I have been looking everywhere for this! This will definitely be very useful for me when I get a chance to start a post. This information is magnificent. smart choice are con artists. Some nice points there. Nice read. Interesting content. I have been looking everywhere for this! I really like your article. Interesting content. This will definitely be very useful for me when I get a chance to start my own blog. This information is magnificent. Excellent website you have got here. This information is magnificent. This will definitely be very useful for me when I get a chance to start a page. I have been looking everywhere for this!

  22. You clearly understand what you are talking about. Some nice points there. I have been looking everywhere for this! It’s really great how well your insights work when used in the right way.

  23. I truly appreciate this post. You are obviously very knowledgeable. I truly appreciate this post. Some nice points there. olympia plazarx are con artists. Nice write up. Some nice points there. Good job on this article! Thank you for finally talking about this! Thanks for writing this. You are a very persuasive writer. Some nice points there. What is the formula for creating a happy life? You appear to know a lot about this. Kids today really need to pay close attention to this sort of information or they’re going to have a really difficult later on in their life. You’ve made my day! Thx again. Thank you for finally discussing this!

  25. Nice write up. You appear to know a lot about this. Some nice points there. Your websites make me think a lot. I have been happy with yard sale. You’ve made my day! Thx again. Thumbs up! Nice write up. These articles make me think a lot. Thanks for writing this. I almost always read new blogs but I wish you would create more content. Some nice points there. I really like your article. Great read. I enjoyed reading what you had to say. Good job on this article! I am surprised at how slow your post came up on my computer.

Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>