Learnings

<p>Big List of Naughty Strings which have a high probability of causing issues when used as user-input data: </p>

<p>SHA1 first collision was generated. You should be using SHA256: </p>

<p>Python mutation testing library: </p>

<p>Wow! Click-To-Copy color palette of Material Design Guidelines developed by Google </p>

<p>Creative list effects tutorial </p>

<p>Cool hover effect ideas! </p>

<p>Compression matters! Good libs to improve image compression: mozjpeg ( and pngquant (</p>

<p>Do you need a help moving to HTTPS? See this step-by-step guide: </p>

<p>Avoid using <code>user.is_anonymous</code> in templates. If for some reason the user is not set it will evaluate to False and this could expose sensitive content. Use <code>not is_authenticated</code> instead.</p>

<p>Talk about metrics on Djangocon US: </p>

<p>Good reference for HTML tags: </p>

<p>You can use django.core.mail.outbox when testing your mail in django. This way, you can check the content of your emails.</p>

<p>Don't you know how to validate your microdata schemas? Use this website </p>

<p>When you wrapp a #React component with #Redux you will lose the reference to it. Use <code>getWrappedInstance</code> to get it back</p>

<p>we are in the top10 on github awards for Python in Brazil! alongside @rochacbruno @avelino0</p>

<p>Great source of UX books: </p>

<p>This gist can greatly improve speed of tests that sends email in Django. </p>

<p>Using Django? Be careful with custom values for <code>&lt;meta name="referrer"&gt;</code>! Yes, a HTML tag can break Django CSRF protection: (PS: note old browsers might misbehave with new <code>&lt;meta name="referrer"&gt;</code> values too! Better avoid it.)</p>

<p>AWS IAM policy for allowing s3cmd to sync to an S3 bucket: </p>

<p>Avoid the overhead of having the default <code>&lt;select&gt;</code> in Django Admin with all the related instances (ForeignKey or ManyToMany) just listing them in <code>ModelAdmin.raw_id_fields</code>. I've just done it and my admin change pages are being loaded up to 10x faster, avoiding a lot of request timed out error.</p>

<p>Interesting post about GraphQL. It covers some interesting uses for it and downsides: "Do We Need GraphQL?" </p>

<p>Be careful with Python's New-Style String Format </p>

<p>Local Storage And How To Use It On Websites </p>

<p>Avoid catching ObjectDoesNotExist exception, when you know the model use Model.DoesNotExist.</p>