Learnings

<p>Google has a blog about testing! </p>

<p>what is the Hawthorne Effect and how it can affect usability test results </p>

<p>Zero downtime database migrations </p>

<p>Keeping Django database migrations backward compatible </p>

<p>The Wrong Abstraction • <em>duplication is far cheaper than the wrong abstraction</em> • Existing code exerts a powerful influence. Its very presence argues that it is both correct and necessary. We know that code represents effort expended, and we are very motivated to preserve the value of this effort. And, unfortunately, the sad truth is that the more complicated and incomprehensible the code, i.e. the deeper the investment in creating it, the more we feel pressure to retain it (the "sunk cost fallacy").</p>

<p>Devtools - Track Which Element Has Focus - Very useful when implementing keyboard accessible components </p>

<p>Goodbye, Clean Code (:eyes:) </p>

<p>The law of large numbers: the average of the results obtained from a large number of trials should be close to the expected value, and will tend to become closer to the expected value as more trials are performed.</p>

<p>numpy has a really handy function called <code>is_busday</code> to check whether a given date is business day or not, it also can receive a list of parameters to give this functionality a power boost such as weekmask (if you need a custom definition for weekdays) and holiday calendar </p>

<p>Eslint-stats: Analyses JS files for error frequency, rather than location. This is helpful when introducing ESLint to an existing project. </p>

<p>A list of <code>/uses</code> pages detailing developer setups, gear, software and configs. </p>

<p>A visual introduction to machine learning: </p>

<p>precious lessons on management and leadership from Julie Zhuo, Facebook’s VP of Design </p>

<p>You don't need a hacky snippet to manipulate dates into the a specific moment, such as EOD. <code>datetime.datetime.combine</code> can do that for you as it receives three parameters: <code>date</code> (can be <code>datetime</code> too), <code>time</code> and <code>tzinfo</code> , the latter being an optional argument. The following snippet will put a given date into EOD:</p> <p>``` from datetime import datetime, time</p> <p>date = datetime.strptime("2019-01-01", "%Y-%m-%d") # datetime.datetime(2029, 1, 1, 0, 0) eod_date = datetime.combine(date, time.max) # datetime.datetime(2029, 1, 1, 23, 59, 59, 999999) ```</p>

<p>API Security Best Practices MegaGuide: </p>

<p>“If You Don't Schedule Time for Maintenance, Your Equipment Will Schedule It for You” - Sprints, marathons and root canals </p>

<p>Every mock.patch() is a little smell </p>

<p>good summary as to why choose freemium or free trial for your SaaS. Or, as the author puts it: "the choice between a functionality-based or time-based paywall". </p>

<p>Feature checking versus Version checking </p>

<p>Brazilian tech conferences repo: </p>

<p>Python multiprocessing: understanding logic behind <code>chunksize</code>: </p>

<p>The best resources for designing and building dark mode experiences across mobile, desktop and the web </p>

<p>Create and track OKR objectives and results with this simple tool </p>

<p>Cover's Theorem: A complex pattern-classification problem, cast in a high-dimensional space nonlinearly, is more likely to be linearly separable than in a low-dimensional space</p>