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Linq list of lists to single list
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You want to use the SelectMany extension method.
var residences = details.SelectMany(d => d.AppForm_Residences).ToList();
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How to set Oracle's Java as the default Java in Ubuntu?
...There are 2 choices for the alternative java (providing /usr/bin/java).
Selection Path Priority Status
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* 0 /opt/java/jdk1.8.0_05/bin/java 20000 auto mode
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Find column whose name contains a specific string
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# select columns containing 'spike'
df.filter(like='spike', axis=1)
You can also select by name, regular expression. Refer to: pandas.DataFrame.filter
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How to generate sample XML documents from their DTD or XSD?
... yes, this is the easiest way. Open XSD, switch to XML Schema Explorer, select the root node, right click and choose "Generate Sample Xml".
– balint
Jul 18 '09 at 16:58
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How do I sort an observable collection?
... of the sorted partition from the unsorted. Worst case O(n). Essentially a selection sort (See below for output).
public static void Sort<T>(this ObservableCollection<T> collection)
where T : IComparable<T>, IEquatable<T>
{
List<T> sorted = collectio...
Random Number Between 2 Double Numbers
...lse
{
// if both negative and positive results are expected we select the sign based on the size of the ranges
double sample = random.NextDouble();
var rate = minAbs / maxAbs;
var absMinValue = Math.Abs(minValue);
bool isNeg = absMinValue <= maxValue ? ...
Ruby on Rails: getting the max value from a DB column
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one more way
Bar.select("Max(bar) as max_bar").first.max_bar
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What does “for” attribute do in HTML tag?
...Chrome and Safari, for example, clicking a label that is associated with a select only puts focus on the select rather than expanding the options.
– Emile Pels
Feb 8 '16 at 13:30
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How does the main() method work in C?
...stom-generate the __start function (or whatever it is called), or at least select one from several pre-compiled alternatives. Information could be stored in the object file about which of the supported forms of main is being used. The linker can look at this info, and select the correct version of ...
Quicksort vs heapsort
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For any deterministic, constant time pivot selection strategy, you can find an array that produces the O(n^2) worst case. It's not enough to eliminate just the minimum. You have to reliably chose pivots that are within a certain pecrentile band.
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