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How do I create a simple 'Hello World' module in Magento?

...el. I might have time later for the model/template related topics, but for now, I don't. I will, however, briefly speak to your SQL question. Magento uses an EAV database architecture. Whenever possible, try to use the model objects the system provides to get the information you need. I know it's a...
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How to extract epoch from LocalDate and LocalDateTime?

... = time.toEpochSecond(ZoneOffset.UTC) for UTC cases, or where you already know the timezone, or long epoch = time.toEpochSecond(ZoneId.systemDefault()); if you want to go that route. – Marcus Mar 19 '19 at 1:30 ...
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Weighted random numbers

...or is more than a few dozen items long (basically, you have to profile to know if this helps or hinders), then there is an optimisation: By storing the cumulative weight sum in each item you can use a binary search to pick the item corresponding to the pick weight. If you do not know the number ...
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Error: This Android SDK requires Android Developer Toolkit version 22.6.1 or above

...> add this url : https://dl-ssl.google.com/eclipse/plugin/4.2 -> OK Now it will list the available updates, which should ideally be adt 20.x.x Select the list items Let it be installed. Eclipse will restart and Its done. I hope this will helpful for you :) ...
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Remove specific commit

... rebase, and there are no straightforward examples, and the docs assume I know more than I do. 11 Answers ...
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git stash changes apply to new branch?

I was working on master branch, made some changes and then stashed them. Now, my master is at HEAD. 3 Answers ...
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Download single files from GitHub

... the URL format mentioned in the answer (raw after the repository name) is now automatically redirected to the format you mention (hostname raw.github.com). When in doubt, browse to the file in question on github.com and click on the 'Raw' button. – mklement0 A...
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Why do Python's math.ceil() and math.floor() operations return floats instead of integers?

...nsider: If floor() returned an integer, what should floor(1.0e30) return? Now, while Python's integers are now arbitrary precision, it wasn't always this way. The standard library functions are thin wrappers around the equivalent C library functions. ...
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Get the current displaying UIViewController on the screen in AppDelegate.m

...oller: UIViewController *vc = self.window.rootViewController; Once you know the root view controller, then it depends on how you have built your UI, but you can possibly find out a way to navigate through the controllers hierarchy. If you give some more details about the way you defined your app...
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Remove last item from array

...e(-1): </b> <div id="div2"></div> Explanation:- Now the basic syntax of Array.prototype.slice() or in short slice() method is: arr.slice([begin[, end]]) Here, the begin parameter is zero-based index at which extraction from an array starts. So, lets say based on above...