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Design patterns or best practices for shell scripts [closed]
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I wrote quite complex shell scripts and my first suggestion is "don't". The reason is that is fairly easy to make a small mistake that hinders your script, or even make it dangerous.
That said, I don't have other resources to pass you...
Does Swift have documentation generation support?
...ts.
Updates
Xcode 7 beta 4 ~ Added "- Throws: ..." as a top-level list item which appears alongside parameters and return descriptions in Quick Help.
Xcode 7 beta 1 ~ Some significant changes to syntax with Swift 2 - documentation comments now based on Markdown (same as playgrounds).
Xcode 6.3...
Create singleton using GCD's dispatch_once in Objective-C
...ectly acceptable and thread-safe way to create an instance of your class. It may not technically be a "singleton" (in that there can only ever be 1 of these objects), but as long as you only use the [Foo sharedFoo] method to access the object, this is good enough.
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What is the proper way to check for null values?
I love the null-coalescing operator because it makes it easy to assign a default value for nullable types.
10 Answers
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Changing route doesn't scroll to top in the new page
...ur when the route changes.
In the step 11 of the tutorial http://angular.github.io/angular-phonecat/step-11/app/#/phones
you can see the list of phones. If you scroll to the bottom and click on one of the latest, you can see that the scroll isn't at top, instead is kind of in the middle.
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How to len(generator()) [duplicate]
...e no length, they aren't collections after all.
Generators are functions with a internal state (and fancy syntax). You can repeatedly call them to get a sequence of values, so you can use them in loop. But they don't contain any elements, so asking for the length of a generator is like asking for t...
Single huge .css file vs. multiple smaller specific .css files? [closed]
.... That way you'll be able to deliver a single, minimised CSS file for the site (which will be far smaller and faster than a normal single CSS source file), while maintaining the nicest development environment, with everything neatly split into components.
Sass and LESS have the added advantage of v...
Shell equality operators (=, ==, -eq)
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It's the other way around: = and == are for string comparisons, -eq is for numeric ones. -eq is in the same family as -lt, -le, -gt, -ge, and -ne, if that helps you remember which is which.
== is a bash-ism, by the way. It's...
How to check a checkbox in capybara?
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I found the following worked for me:
# Check
find(:css, "#cityID[value='62']").set(true)
# Uncheck
find(:css, "#cityID[value='62']").set(false)
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foreach vs someList.ForEach(){}
There are apparently many ways to iterate over a collection. Curious if there are any differences, or why you'd use one way over the other.
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