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Are HLists nothing more than a convoluted way of writing tuples?
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Addressing questions one to three: one of the main applications for HLists is abstracting over arity. Arity is typically statically known at any given use site of an abstraction, but varies from site to site. Take this, from shapeless's examples,
def flatten[T <: Product, ...
Django Forms: if not valid, show form with error message
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If you render the same view when the form is not valid then in template you can access the form errors using form.errors.
{% if form.errors %}
{% for field in form %}
{% for error in field.errors %}
<div class="alert alert-danger">
<strong&g...
Git SSH error: “Connect to host: Bad file number”
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After having this problem myself, I found a solution that works for me:
Error message:
ssh -v git@github.com
OpenSSH_5.8p1, OpenSSL 1.0.0d 8 Feb 2011
debug1: Connecting to github.com [207.97.227.239] port 22.
debug1: connect...
Using Default Arguments in a Function
I am confused about default values for PHP functions. Say I have a function like this:
12 Answers
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SQL - Query to get server's IP address
Is there a query in SQL Server 2005 I can use to get the server's IP or name?
10 Answers
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CSS transition shorthand with multiple properties?
...em to find the correct syntax for the CSS transition shorthand with multiple properties. This doesn't do anything:
6 Answ...
Why can't my program compile under Windows 7 in French? [closed]
I'm running Windows 7 French and I'm trying to compile this really basic program, but Visual Studio is being stubborn and refuses to comply. I also tried compiling it with both GCC 4.7 and Clang trunk on Coliru and I get more or less the same errors (output is below the code), though I think Colir...
LEFT JOIN only first row
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edited Mar 25 '13 at 23:16
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Automatic HTTPS connection/redirect with node.js/express
I've been trying to get HTTPS set up with a node.js project I'm working on. I've essentially followed the node.js documentation for this example:
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How can I do an asc and desc sort using underscore.js?
...ascending:
[2, 3, 1].sort(); // [1, 2, 3]
// But can be descending if you provide a sort handler:
[2, 3, 1].sort(function(a, b) {
// a = current item in array
// b = next item in array
return b - a;
});
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