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Why do function pointer definitions work with any number of ampersands '&' or asterisks '*'?
...l reason why all of these work is that a function (like foo) is implicitly convertible to a pointer to the function. This is why void (*p1_foo)() = foo; works: foo is implicitly converted into a pointer to itself and that pointer is assigned to p1_foo.
The unary &, when applied to a function,...
How do I get the color from a hexadecimal color code using .NET?
...re looking for it:
using System.Windows.Media;
Color color = (Color)ColorConverter.ConvertFromString("#FFDFD991");
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How to read/write a boolean when implementing the Parcelable interface?
...ionRight = (in.readInt() == 0) ? false : true;
boolean type needs to be converted to something that Parcel supports and so we can convert it to int.
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How to convert an Array to a Set in Java
I would like to convert an array to a Set in Java. There are some obvious ways of doing this (i.e. with a loop) but I would like something a bit neater, something like:
...
What's the difference between %s and %d in Python string formatting?
...eger
%s is for generic string or object and in case of object, it will be converted to string
Consider the following code
name ='giacomo'
number = 4.3
print('%s %s %d %f %g' % (name, number, number, number, number))
the out put will be
giacomo 4.3 4 4.300000 4.3
as you can see %d will tru...
Most efficient conversion of ResultSet to JSON?
The following code converts a ResultSet to a JSON string using JSONArray and JSONObject .
14 Answers
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Accessing members of items in a JSONArray with Java
... put("b", 400);
}}
)));
//Then: convert to List<JSONObject>
List<JSONObject> jsonItems = IntStream.range(0, jsonArray.length())
.mapToObj(index -> (JSONObject) jsonArray.get(index))
.collect(Collectors.toList());
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Calculating the difference between two Java date instances
...ong diffInMillies = date2.getTime() - date1.getTime();
return timeUnit.convert(diffInMillies,TimeUnit.MILLISECONDS);
}
And then can you call:
getDateDiff(date1,date2,TimeUnit.MINUTES);
to get the diff of the 2 dates in minutes unit.
TimeUnit is java.util.concurrent.TimeUnit, a standard Jav...
A better similarity ranking algorithm for variable length strings
...
marzagao's answer is great. I converted it to C# so I thought I'd post it here:
Pastebin Link
/// <summary>
/// This class implements string comparison algorithm
/// based on character pair similarity
/// Source: http://www.catalysoft.com/articles...
Java 8 stream's .min() and .max(): why does this compile?
...his decorator is the magic that allows Integer::max and Integer::min to be converted into a Comparator.
– Chris Kerekes
Oct 21 '16 at 20:58
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