How can I check from a plugin config file if devMode is enabled?

Question

Using the Pixel & Tonic Contact Form plugin, I added a config file (config/contactform.php) to override plugin settings from the CP.

I would like to change some settings if devMode is enabled : recipients from the contact form plugin, to separate my tests addresses from my client addresses.

<?php

$recipients = array(
    'devMode' => 'example@domain.com,example@domain.com',
    'prodMode' => 'john@doe.com,jean@dupont.com'
);

if (devMode == true) {
    $recipients = $recipients['devMode'];
} else {
    $recipients = $recipients['prodMode'];
}

return array(
    'toEmail' => ($recipients ?: null),

How can I check if devMode == true? Can I access to this value using craft()->config or something else that?

Answer 1

It's as simple as

if ( craft()->config->get( 'devMode' ) )
{
 //do stuff
}

Answer 2

For those coming here using Craft 3, it's now Craft::$app->getConfig()->general->devMode.