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Why are there two kinds of functions in Elixir?
... a closure, similar to a lambda in Ruby. We can create it as follows:
x = 1
fun = fn y -> x + y end
fun.(2) #=> 3
A function can have multiple clauses too:
x = 1
fun = fn
y when y < 0 -> x - y
y -> x + y
end
fun.(2) #=> 3
fun.(-2) #=> 3
Now, let's try something differe...
Maven: best way of linking custom external JAR to my project?
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15 Answers
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How to add to an existing hash in Ruby
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191
If you have a hash, you can add items to it by referencing them by key:
hash = { }
hash[:a] =...
Seeing escape characters when pressing the arrow keys in python shell
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edited Mar 10 '17 at 5:25
Qix - MONICA WAS MISTREATED
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Converting an array of objects to ActiveRecord::Relation
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edited Dec 2 '14 at 0:04
answered Jun 26 '13 at 23:29
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Google Maps: how to get country, state/province/region, city given a lat/long value?
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136
What you are looking for is called reverse geocoding. Google provides a server-side reverse ge...
Could not load file or assembly or one of its dependencies
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Bidirectional 1 to 1 Dictionary in C#
I am looking for a generic, bidirectional 1 to 1 Dictionary class in C# (2), ie. a BiDictionaryOneToOne<T, S> which is guaranteed to only contain one of each value and key (up to RefEquals anyway), and which can be searched using either key or value. Anyone know of one, or should I just impl...
Pull to refresh UITableView without UITableViewController
...action: #selector(refresh(_:)), for: .valueChanged)
if #available(iOS 10.0, *) {
tableView.refreshControl = refreshControl
} else {
tableView.backgroundView = refreshControl
}
}
@objc func refresh(_ refreshControl: UIRefreshControl) {
// Do your job, when done:
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