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Build an iOS app without owning a mac? [closed]

...r virtual machine (the name is unimportant, I called it "Mac"). In "Type", select "Mac OS X" and in "Version" select "macOS 10.13 High Sierra (64 bit)" (the Mac version you will install on the virtual machine is actually Catalina, but VirtualBox doesn't have that option yet and it works just fine if...
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What columns generally make good indexes?

...earching the results speedily from tables. So it is most important step to select which columns to be indexed. There are two major places where we can consider indexing: columns referenced in the WHERE clause and columns used in JOIN clauses. In short, such columns should be indexed against which yo...
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postgresql - replace all instances of a string within text field

...g regex replacment. Let's see how easy it is to replace a cat with a dog. SELECT regexp_replace('Cat bobcat cat cats catfish', 'cat', 'dog'); --> Cat bobdog cat cats catfish SELECT regexp_replace('Cat bobcat cat cats catfish', 'cat', 'dog', 'i'); --> dog...
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Linq to Entities join vs groupjoin

...Join syntax would be from p in Parent join c in Child on p.Id equals c.Id select new { p.Value, c.ChildValue } returning an IEnumerable<X> where X is an anonymous type with two properties, Value and ChildValue. This query syntax uses the Join method under the hood. GroupJoin syntax would be ...
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Volley Android Networking Library

...ley repository via Git. Import the project into Android Studio. (I usually select the project's gradle file when importing in Android Studio) Build the project. (I had to change the gradle build settings to reflect the latest build tools and gradle version, but it's usually up to date). In your file...
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Why is setTimeout(fn, 0) sometimes useful?

... recently run into a rather nasty bug, wherein the code was loading a <select> dynamically via JavaScript. This dynamically loaded <select> had a pre-selected value. In IE6, we already had code to fix the selected <option> , because sometimes the <select> 's selected...
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In Eclipse, can I have multiple Console views at once, each showing a different Console?

...nsole views. One of your other buttons near your console tab is "Display Selected Console". When you choose this option you can select from any of your running applications. Just select the tab, select which application you want it to watch, and repeat for the other tab. You can then move your ...
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How to build jars from IntelliJ properly?

...from IntelliJ: Go to project structure: Create a new artifact: Select the main class, and be sure to change the manifest folder: You have to change manifest directory: <project folder>\src\main\java replace "java" with "resources" <project folder>\src\main\resources ...
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Clicking the text to select corresponding radio button

...t; and has 4 possible choices, using radio buttons to allow the user to select his/her answer. The current HTML for a single question looks like: ...
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ERROR ITMS-9000: “Redundant Binary Upload. There already exists a binary upload with build version '

...umber just has to be unique (and higher) for each binary that is uploaded (select the Target, then Xcode -> General -> Build, see the picture below). For example in the image below the build uploaded has version 3.1.4 (3.75 in the older image) and the build number is 1. Thus, after uploading t...