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One-liner to recursively list directories in Ruby?
...elsif child.directory?
rec_path(child, file) + [child]
end
end.select { |x| x }.flatten(1)
end
# only directories
rec_path(Pathname.new(dir), false)
# directories and normal files
rec_path(Pathname.new(dir), true)
...
Why isn't SQL ANSI-92 standard better adopted over ANSI-89?
...shion. The "best" way to break is by compilation error. For example if you SELECT * somewhere, the addition of a column could fail to compile. The next best way to fail would be a run time error. It's worse because your users may see it, but it still gives you a nice warning that you've broken somet...
Calculate the median of a billion numbers
...r sending data over a network to be faster than sorting it (let alone just selecting the median) it needs to be a pretty damn fast network. Might be a better prospect if the network can be presumed to be instantaneous, for example if you have 100 cores with equal access to RAM containing the data.
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How to get random value out of an array?
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You could use the array_rand function to select a random key from your array like below.
$array = array("one", "two", "three", "four", "five", "six");
echo $array[array_rand($array, 1)];
or you could use the rand and count functions to select a random index.
$...
android.view.InflateException: Binary XML file line #12: Error inflating class
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I had this error because i selected theme as Material theme. But as i was trying to run app on 4.4.2 it gave this error.
Solution : Select Theme_holo as theme
share
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App can't be opened because it is from an unidentified developer
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In 10.8.5, the option to select from the 'Allow applications downloaded from:' set of radio buttons is: 'Anywhere'
– Mark Roper
Nov 11 '13 at 16:36
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How do I change the color of the text in a UIPickerView under iOS 7?
...IColor whiteColor]}];
return attString;
}
If you want to change the selection bar colors as well, I found that I had to add 2 separate UIViews to the view containing the UIPickerView, spaced 35 pts apart for a picker height of 180.
Swift 3:
func pickerView(_ pickerView: UIPickerView, attrib...
Copy rows from one Datatable to another DataTable?
...et = dtSource.Clone();
DataRow[] rowsToCopy;
rowsToCopy = dtSource.Select("key='" + matchString + "'");
foreach (DataRow temp in rowsToCopy)
{
dtTarget.ImportRow(temp);
}
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Listview Scroll to the end of the list after updating the list
...you can manually tell the list to scroll to the bottom by setting the list selection to the last row. Something like:
private void scrollMyListViewToBottom() {
myListView.post(new Runnable() {
@Override
public void run() {
// Select the last row so it will scroll in...
How to style readonly attribute with CSS?
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w/ IE7 you can still use the selector with jQuery
– ladieu
Apr 30 '14 at 17:55
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