In this article, we’ll discuss and learn about the use case of iterating over React `children` and the ways to do it. In particular, we will deep dive into one of the utility methods, `React.Children.toArray`, that React gives us, which helps to iterate over the children in a way which ensures performance and determinism.
After the tutorial, Prey settles into a pattern that’s going to repeat for most of the rest of the game. You need to get thing A, but to obtain that thing you need to go through obstacles B, C, D and E, and each of those obstacles has sub-obstacles and optional branching diversions to explore. […]
I used to call this technique "type tunnelling" and noted its use in XML in 2005. When you are using a strongly typed language but instead your types are stringly typed, you are passing strings around when a better type exists. Here's some examples of stringly typed method calls:Robot.Move("1","2"); //Should be int like 1 and 2Dog.InvokeMethod("Bark"); //Dispatching a method passing in a string that is the method's name. Dog.Bark()Message.Push("TransactionCompleted"); Could be an enum There's reasons to do each of these things, but as a general rule your sense of Code Smell should light up if you smell Stringly Typed things.Inline SQL is another where one language (a proper language with Syntax) is tunneled as a string within another. There's no good solution for this as most languages don't have a way to express SQL such that a compiler could noticed a problem. Sometimes we'll see Fluent APIs like LINQ try to solve this. RegEx is another example of a string language within a language. Sometimes one will see large switch statements that fundamentally change program flow via "magic strings." One misspelling and your switch case will never fire.Again, these have valid reasons for existence but you won't catch syntax issues until runtime.LinqPad has a great post on why strongly typed SQL via LINQ or other fluent syntaxes are often better than SQL. Here's some LINQ in C# that will eventually turn into SQL. You get autocomplete and syntax warnings throughout the authoring process:from p in db.Purchaseswhere p.Customer.Address.State == "WA" || p.Customer == nullwhere p.PurchaseItems.Sum (pi => pi.SaleAmount) > 1000select pSo why does it matter?Regex rx = new Regex(@"b(?<word>w+)s+(k<word>)b");This isn't to say all Stringly Typed code is bad. It's to say that you need to make sure it doesn't just happen on its own. Be prepared to justify WHY it was written that way. Is string the only data type the app uses? Are there potential uses where something should be a Message or an Event or a Something and it was just easier or simpler to use a string? And here's the rub - was this Stringly Typed data structure pass to another component or service? Did you intend for its semantic meaning to be retained across this logical (or physical) boundary?A great litmus test is "how would I catch a misspelling?" Compiler" Unit Test? Production ticket?What do you think about Stringly Typed code? Do we type Name and Surname? Is that too far? Do we string all the things?Sponsor: Pluralsight helps teams build better tech skills through expert-led, hands-on practice and clear development paths. For a limited time, get 50% off your first month and start building stronger skills.© 2021 Scott Hanselman. All rights reserved.
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As COVID-19 spread, BioNTech cofounders Uğur Şahin and Özlem Türeci had one goal: to make a safe, effective vaccine faster than ever before. In this illuminating conversation with head of TED Chris Anderson, the immunologists (and married couple) share the fascinating story of how their decades of mRNA research powered the Pfizer-BioNTech vaccine -- and forecast what this breakthrough science could mean for the future of vaccines and other immunotherapy treatments.
WordPress is global in reach and open source in nature. And you would assume that what allows the software to be used by anyone would also enable it to be built by anyone. After all, your location doesn’t matter, and who employs you also doesn’t matter. And your relative social standing certainly shouldn’t matter. As […]
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As a business person, you’re always looking for new opportunities to improve your company’s standing in the marketplace. Whether it’s creating high-quality content, adopting new marketing strategies, or brushing up current ones, you always want to fulfill your potential when it comes to advertising your company’s products. Not doing so can adversely impact your business...
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