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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] =...
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...
Using scp to copy a file to Amazon EC2 instance?
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15 Answers
15
Active
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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...
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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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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Find all files with a filename beginning with a specified string?
I have a directory with roughly 100000 files in it, and I want to perform some function on all files beginning with a specified string, which may match tens of thousands of files.
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Using GSON to parse a JSON array
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113
Problem is caused by comma at the end of (in your case each) JSON object placed in the array: ...
Full Screen DialogFragment in Android
...n v;
}
}
}
and the layouts:
fragment_dialog.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:minWidth="1000dp"
...
How to sort git tags by version string order of form rc-X.Y.Z.W?
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161
Use version sort
git tag -l | sort -V
or for git version >= 2.0
git tag -l --sort=v:ref...