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How to get a number of random elements from an array?
I am working on 'how to access elements randomly from an array in javascript'. I found many links regarding this. Like:
Get random item from JavaScript array
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How do I inject a controller into another controller in AngularJS
I'm new to Angular and trying to figure out how to do things...
7 Answers
7
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How can I use a local image as the base image with a dockerfile?
I'm working on a dockerfile.
I just realised that I've been using FROM with indexed images all along.
4 Answers
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Cleanest way to toggle a boolean variable in Java?
Is there a better way to negate a boolean in Java than a simple if-else?
9 Answers
9
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Converting an array of objects to ActiveRecord::Relation
I have an array of objects, let's call it an Indicator . I want to run Indicator class methods (those of the def self.subjects variety, scopes, etc) on this array. The only way I know to run class methods on a group of objects is to have them be an ActiveRecord::Relation. So I end up resorting to...
How to generate an openSSL key using a passphrase from the command line?
First - what happens if I don't give a passphrase? Is some sort of pseudo random phrase used? I'm just looking for something "good enough" to keep casual hackers at bay.
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Check if an array is empty or exists
When the page is loading for the first time, I need to check if there is an image in image_array and load the last image.
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How do you add an action to a button programmatically in xcode
I know how to add an IBAction to a button by dragging from the interface builder, but I want to add the action programmatically to save time and to avoid switching back and forth constantly. The solution is probably really simple, but I just can't seem to find any answers when I search it. Thank you...
Extract month and year from a zoo::yearmon object
I have a yearmon object:
7 Answers
7
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What is the difference between Lisp-1 and Lisp-2?
I have tried to understand the difference between Lisp-1 and Lisp-2 and how this relates to Clojure but I still do not understand properly. Can anyone enlighten me?
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