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Is it possible to figure out the parameter type and return type of a lambda?
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Heh, I was just writing this. Didn't think about tuple_element though, thanks.
– GManNickG
Oct 30 '11 at 7:30
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How can I use if/else in a dictionary comprehension?
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You've already got it: A if test else B is a valid Python expression. The only problem with your dict comprehension as shown is that the place for an expression in a dict comprehension must have two expressions, separated by a colon:
{ (some_key if condition else default_...
How do I provide custom cast support for my class?
How do I provide support for casting my class to other types? For example, if I have my own implementation of managing a byte[] , and I want to let people cast my class to a byte[] , which will just return the private member, how would I do this?
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What's the standard way to work with dates and times in Scala? Should I use Java types or there are
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Video scalaj: Idiomatic Scala Wrappers for Java Libraries days2010.scala-lang.org/node/138/164
– oluies
Sep 1 '10 at 1:48
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Booleans, conditional operators and autoboxing
...n; since null (type "the special null type") can be implicitly converted (widened) to any type, you can consider the special null type to be a "superclass" of any type (class) for the purposes of lub().
– Bert F
Apr 25 '14 at 13:03
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Why do some C# lambda expressions compile to static methods?
...ghtly):
private class <Main>b__0
{
public int age;
public void withClosure(string s)
{
Console.WriteLine("My name is {0} and I am {1} years old", s, age)
}
}
private static class <Main>b__1
{
public static void withoutClosure(string s)
{
Console....
How to properly overload the
...C++ for matrix operations. However my compiler complains, where before it did not. This code was left on a shelf for 6 months and in between I upgraded my computer from debian etch to lenny (g++ (Debian 4.3.2-1.1) 4.3.2
) however I have the same problem on a Ubuntu system with the same g++.
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Finding the index of elements based on a condition using python list comprehension
...do need an API similar to Matlab's, you would use numpy, a package for multidimensional arrays and numerical math in Python which is heavily inspired by Matlab. You would be using a numpy array instead of a list.
>>> import numpy
>>> a = numpy.array([1, 2, 3, 1, 2, 3])
>>>...
Cancellation token in Task constructor: why?
...sitioning to
Running, it'll immediately transition to Canceled. This avoids the
costs of running the task if it would just be canceled while running
anyway.
If the body of the task is also monitoring the cancellation token and throws an OperationCanceledException containing that token
(wh...
How do I use Node.js Crypto to create a HMAC-SHA1 hash?
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A few years ago it was said that update() and digest() were legacy methods and the new streaming API approach was introduced. Now the docs say that either method can be used. For example:
var crypto = require('crypto');
var text = 'I love cu...