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How to check that an element is in a std::set?
...e in many STL containers such as std::map, std::set, ... is:
const bool is_in = container.find(element) != container.end();
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What is 'Pattern Matching' in functional languages?
... `Cons`, we only want the first part; that's the list's head.
head (Cons h _) = h
Since List a values can be of two different kinds, we need to handle each one separately; this is the pattern matching. In head x, if x matches the pattern Nil, then we run the first case; if it matches the pattern ...
MongoDB with redis
...data
– John Zwinck
Sep 12 '12 at 11:32
Great points about some of the comparative strengths of each.
...
Python set to list
... John La RooyJohn La Rooy
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...
Unix's 'ls' sort by name
...ome reason
– Mitch
Dec 16 '14 at 14:32
...
Python Sets vs Lists
...a set?
– roganjosh
Jun 21 '18 at 18:32
@roganjosh, python still runs on a machine and some implementations like list a...
What are 'closures' in .NET?
...thod and the variable j
[CompilerGenerated]
private sealed class <>c__DisplayClass2
{
public <>c__DisplayClass2();
public void <fillFunc>b__0()
{
Console.Write("{0} ", this.j);
}
public int j;
}
for the function:
static void fillFunc(int count) {
...
Algorithm to detect overlapping periods [duplicate]
... throw new Exception("Invalid range edges.");
}
_Start = start;
_End = end;
}
#endregion
#region Properties
private DateTime _Start;
public DateTime Start {
get { return _Start; }
private set { _Start = value; }
}
priva...
How do I select a random value from an enumeration?
...ve an array of all values. Then select a random array item.
static Random _R = new Random ();
static T RandomEnumValue<T> ()
{
var v = Enum.GetValues (typeof (T));
return (T) v.GetValue (_R.Next(v.Length));
}
Test:
for (int i = 0; i < 10; i++) {
var value = RandomEnumValue&l...
How to get datetime in JavaScript?
...
function pad_2(number)
{
return (number < 10 ? '0' : '') + number;
}
function hours(date)
{
var hours = date.getHours();
if(hours > 12)
return hours - 12; // Substract 12 hours when 13:00 and more
return h...