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What exactly is Heroku?
I just started learning Ruby on rails and I was wondering what Heroku really is? I know that its a cloud that helps us to avoid using servers? When do we actually use it?
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Convert Long into Integer
...s not go from Long to int directly, so
Integer i = (int) (long) theLong;
And in both situations, you might run into overflows (because a Long can store a wider range than an Integer).
Java 8 has a helper method that checks for overflow (you get an exception in that case):
Integer i = theLong == ...
Android: How to stretch an image to the screen width while maintaining aspect ratio?
...to download an image (of unknown size, but which is always roughly square) and display it so that it fills the screen horizontally, and stretches vertically to maintain the aspect ratio of the image, on any screen size. Here is my (non-working) code. It stretches the image horizontally, but not vert...
Are Roslyn SyntaxNodes reused?
I've been taking a look to Roslyn CTP and, while it solves a similar problem to the Expression tree API , both are immutable but Roslyn does so in a quite different way:
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Android: When is onCreateOptionsMenu called during Activity lifecycle?
I put a couple of breakpoints in onCreate (one at the beginning, and one at the end of the method), and I also put one at the beginning of onCreateOptionsMenu . The onCreate method is called first, and before it finishes onCreateOptionsMenu is called.
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Move the most recent commit(s) to a new branch with Git
... to move the last several commits I've committed to master to a new branch and take master back to before those commits were made. Unfortunately, my Git-fu is not strong enough yet, any help?
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Objective-C implicit conversion loses integer precision 'NSUInteger' (aka 'unsigned long') to 'int'
I'm working through some exercises and have got a warning that states:
4 Answers
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How to check if the URL contains a given string?
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You need add href property and check indexOf instead of contains
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function() {
if...
Best practice for Django project working directory structure
... I've found that it's hard to create a directory structure that works well and remain clean for every developer and administrator. There is some standard structure in most projects on github. But it does not show a way to organize another files and all projects on pc.
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How to get past the login page with Wget?
...re the --post-data parameter is properly percent-encoded (especially ampersands!) or the request will probably fail. Also make sure that user and password are the correct keys; you can find out the correct keys by sleuthing the HTML of the login page (look into your browser’s “inspect element”...