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Passing variables through handlebars partial
...andlebars.js in an express.js application. To keep things modular, I split all my templates in partials.
8 Answers
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Converting camel case to underscore case in ruby
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That's actually a 10-liner!
– kristianp
Feb 25 '16 at 23:42
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Why can't I forward-declare a class in a namespace using double colons?
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All other answers were confusing to me but this "you can't declare a class within a namespace from outside that namespace. You have to be in the namespace." was very helpful hint to remember.
– dashesy
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How to avoid Dependency Injection constructor madness?
..., more coarse-grained interface that hides the interaction between some or all of the fine-grained dependencies you currently require.
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Javascript : natural sort of alphanumerical strings
...by the value of a certain key in an array of objects. It can also automatically identify and sort strings of: currencies, dates, currency, and a bunch of other things.
Surprisingly, it's also only 1.6kB when gzipped.
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二维码生成使用指导 · App Inventor 2 中文网
...; margin-bottom: 4px; background: url(/static/images/feedback.svg) 50% / 100% auto no-repeat; } /*手机版：反馈浮动按钮收小*/ @media screen and (max-width: 700px) { .feedback-pop { font-size: 13px; line-height: 14px; padding: 10px 7px; } .feedback-pop .feedback-img { width: 2...
Generate JSON string from NSDictionary in iOS
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Apple added a JSON parser and serializer in iOS 5.0 and Mac OS X 10.7. See NSJSONSerialization.
To generate a JSON string from a NSDictionary or NSArray, you do not need to import any third party framework anymore.
Here is how to do it:
NSError *error;
NSData *jsonData = [NSJSONSeriali...
Why is Scala's immutable Set not covariant in its type?
...ameter of type A due to the contravariance of functions. Set could potentially be contravariant in A, but this too causes issues when you want to do things like this:
def elements: Iterable[A]
In short, the best solution is to keep things invariant, even for the immutable data structure. You'll...
How to convert a string or integer to binary in Ruby?
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You would naturally use Integer#to_s(2), String#to_i(2) or "%b" in a real program, but, if you're interested in how the translation works, this method calculates the binary representation of a given integer using basic operators:
def int_t...
List of Big-O for PHP functions
After using PHP for a while now, I've noticed that not all built-in PHP functions are as fast as expected. Consider these two possible implementations of a function that finds if a number is prime using a cached array of primes.
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