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Is 1.0 a valid output from std::generate_canonical?
...curs quite often in real-world calculations) when x is close to zero. The "extra precision" near multiples of π is generally just a side effect of that.
– Ilmari Karonen
Sep 4 '14 at 20:16
...
How do I use pagination with Django class based generic ListViews?
... I have been doing this, but the problem I find, is when I do extra processing on objects in the queryset, it applys them to all of the results in the database. So for a query that returns 100 objects, but shows only ten objects per page, the extra processing will be done on 100 objects...
Can I redirect the stdout in python into some sort of string buffer?
... a small FTP client, but some of the functions in the package don't return string output, but print to stdout . I want to redirect stdout to an object which I'll be able to read the output from.
...
Received fatal alert: handshake_failure through SSLHandshakeException
...+to+SSL+services
*/
public class SSLRC4Poke {
public static void main(String[] args) {
String[] cyphers;
if (args.length < 2) {
System.out.println("Usage: "+SSLRC4Poke.class.getName()+" <host> <port> enable");
System.exit(1);
}
...
C# member variable initialization; best practice?
...d properties (field initializers cannot) - i.e.
[DefaultValue("")]
public string Foo {get;set;}
public Bar() { // ctor
Foo = "";
}
Other than that, I tend to prefer the field initializer syntax; I find it keeps things localized - i.e.
private readonly List<SomeClass> items = new List<...
Designing function f(f(n)) == -n
...oof of why such a function can't exist, for all numbers, if it doesn't use extra information(except 32bits of int):
We must have f(0) = 0. (Proof: Suppose f(0) = x. Then f(x) = f(f(0)) = -0 = 0. Now, -x = f(f(x)) = f(0) = x, which means that x = 0.)
Further, for any x and y, suppose f(x) = y. We w...
Can someone explain __all__ in Python?
...xplicitly mentioned here, is exactly when __all__ is used. It is a list of strings defining what symbols in a module will be exported when from <module> import * is used on the module.
For example, the following code in a foo.py explicitly exports the symbols bar and baz:
__all__ = ['bar', '...
Why Java needs Serializable interface?
...e annoyance when dealing with pure java, like some flaws in collection and string processing in standard library. Happily there's Kryo, but it is dependency and one needs to find it first. This is how built-in serialization should have been done.
– dmitry
Aug 7...
Run two async tasks in parallel and collect results in .NET 4.5
...ould run in parallel.
public class Program
{
static void Main(string[] args)
{
Go();
}
public static void Go()
{
GoAsync();
Console.ReadLine();
}
public static async void GoAsync()
{
...
Create a CSV File for a user in PHP
...code I use to optionally encode CSV fields:
function maybeEncodeCSVField($string) {
if(strpos($string, ',') !== false || strpos($string, '"') !== false || strpos($string, "\n") !== false) {
$string = '"' . str_replace('"', '""', $string) . '"';
}
return $string;
}
...