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How-To

This tag is associated with 35 posts
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Time-Limited in-App Purchase

What if you need to create a “holiday special” in-app purchase? The item would only be available at a limited period some time in the future. However those who have bought the item would be able to use it beyond the purchase-able period, including restoring purchases should they need it.

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Architecting a Scalable Web Application

Writing a web app is one thing. Deploying it on the global Internet for millions of users is another thing. Keeping it secure from prying eyes, competitors, and general baddies is yet another challenge. How can you do all of this in a startup where there are a billion of other things in your head […]

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Future-Proof Your Data Persistence

The data persistence stack that is an appropriate decision today may not be an optimal solution when your app has grown. You would need to design your app to withstand the test of time and be extensible for as it grows. Read more to learn how.

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Watch App as In-App Purchase?

How do you sell a watchOS app? Through in-app purchase of course, like these fine apps have done. However there’s a caveat condition that you need to guard for, otherwise you risk having angry customers.

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Enabling Hardened Runtime on a Sparkle App

Notarization requirements is just around the corner in the coming release of macOS. But the Sparkle updater framework is not yet ready for it. Here’s how you can fix that.

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Shared Frameworks in a Hardened Runtime World

macOS Catalina is just around the corner and with it comes mandatory notarization and hardened runtime. If your mac app accepts plugins or otherwise loads 3rd party frameworks and libraries, there are a few caveats that you’ll need to take care.

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Which Database to Use for My iOS App?

Choosing a database to use for your iOS app is no simple feat. But what if you have the tools to make an informed decision for your app? What if you can decide for today and design for tomorrow?

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How Developers can Draw Icons for iOS Apps

Are you an iOS developer who believes that making icons is purely witchcraft? Perhaps you have an inkling to be able to do some of that wizardry yourself? Here is a step-by-step process on how to create icons for tab bar buttons as well as other glyphs. Techniques that you would find useful for those […]

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How to Get Core ML Produce Images as Output

Core ML’s tools to convert other framework’s machine learning models is a pretty awesome feat in itself. However it is by no means complete. I found some issues in converting models which outputs images. Issues which took me a few weeks to solve even after many consultations to Google and Apple’s own forums. But here’s […]

[decorative] MacOS developer

Getting Rid of Xcode Command Line Tools

Are you being hunted by Xcode command line tools? Have you uninstalled it only to realize that it came back again? If you already have the Xcode installed and really need the full IDE, don’t waste space by having the command line tools installed as well. Here’s how.

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WordPress JetPack’s Vulnerability

Having social sharing functions on every page in your blog seems intuitively useful. However these could easily be exploited by malicious people to do bad things and pass the blame onto you. Learn what is the problem behind these social media buttons and what you should do as a webmaster.

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How To Use Your Network Drive as a Git Server

Do you know that WD My Cloud EX2 can serve as a git server for a small team? Now you do and here’s how you can set it up.

How to Design Apps (Even if you’re not a designer)

You want to design apps? You either need to hire a designer or become one. Luckily it isn’t too hard to come up with a reasonable design.

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Making Cocoapods Play Nice with Xcode Maven Plugin

If you have to use Maven to build your Xcode projects and lusting to move your dependency management to Cocoapods, here is a relief for you. Read on for a tip on how to get Cocoapods work in a Java-dominated enterprise.

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