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(![]+[])[+[]]… Explain why this works
...// "number"
One more time, this is applied to an empty Array, and as I said before, the String representation of an Array is an empty string, and when you convert an empty string to Number, it is converted to zero:
+[]; // 0, because
+[].toString(); // 0, because
+""; // 0
Therefore we can "dec...
Type converting slices of interfaces
...
In Go, there is a general rule that syntax should not hide complex/costly operations. Converting a string to an interface{} is done in O(1) time. Converting a []string to an interface{} is also done in O(1) time since a slice is still one value. However, converting a []string to ...
How to find a min/max with Ruby
...ur namespace so it just becomes max(4, 7). Wait; looking above, I see I said that already.
– Kaz
Mar 25 '14 at 1:03
18
...
How do I get the type name of a generic type argument?
...
Your code should work. typeof(T).FullName is perfectly valid. This is a fully compiling, functioning program:
using System;
class Program
{
public static string MyMethod<T>()
{
return typeof(T).FullName;
}
static void Main(string[] args)
{
...
How to pass an ArrayList to a varargs method parameter?
...ength array for no reason.)
Here's a complete example:
public static void method(String... strs) {
for (String s : strs)
System.out.println(s);
}
...
List<String> strs = new ArrayList<String>();
strs.add("hello");
strs.add("wordld");
method(strs.toArray(...
How do I find out if first character of a string is a number?
... does not have this problem.
To make the entire condition one line and avoid length checks, you can alter the regexes to the following:
s.matches("\\d.*")
// or the equivalent
s.matches("[0-9].*")
If the condition does not appear in a tight loop in your program, the small performance hit for usi...
error: ‘NULL’ was not declared in this scope
...
NULL is not a keyword. It's an identifier defined in some standard headers. You can include
#include <cstddef>
To have it in scope, including some other basics, like std::size_t.
...
Inheriting constructors
...erit all of them. To inherit only selected ones you need to write the individual constructors manually and call the base constructor as needed from them.
Historically constructors could not be inherited in the C++03 standard. You needed to inherit them manually one by one by calling base implementa...
SQL multiple column ordering
... here how to order either column1 or column2?
– PoliDev
Jun 18 '13 at 8:47
@PoliDev, It first orders by column1 in D...
git -> show list of files changed in recent commits in a specific directory
... var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
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