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What is the difference between trie and radix trie data structures?
...e items for the keys 't', 'te', 'i' or 'in' there would need to be extra information present at each node to distinguish between nullary nodes and nodes with actual values.
What is a radix trie?
"Radix trie" seems to describe a form of trie that condenses common prefix parts, as Ivaylo Strandjev...
Sql Server string to date conversion
...n non-flexible, way of taking an arbitrarily structured datetime in string format and converting it to the datetime data type.
By "arbitrarily", I mean "a form that the person who wrote it, though perhaps not you or I or someone on the other side of the planet, would consider to be intuitive and co...
How to set a default value for a datetime column to record creation time in a migration?
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Bad form to vote something down and not explain what issue was taken with the answer. Anybody have an idea why this was voted down? It's displaying the syntax if you wanted to change a column instead of creating one.
...
“inconsistent use of tabs and spaces in indentation”
...dentation is incredibly bad. Never do that ever (except for languages/file formats that require it). The end.
– Lennart Regebro
Jul 26 '11 at 9:28
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How can I make a .NET Windows Forms application that only runs in the System Tray?
What do I need to do to make a Windows Forms application run in the System Tray?
9 Answers
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Change One Cell's Data in mysql
...because the previous answers were a little bit cryptic to me.
The general form of the command you need to use to update a single row's column:
UPDATE my_table SET my_column='new value' WHERE something='some value';
And here's an example.
BEFORE
mysql> select aet,port from ae;
+------------+...
How to upload, display and save images using node.js and express [closed]
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First of all, you should make an HTML form containing a file input element. You also need to set the form's enctype attribute to multipart/form-data:
<form method="post" enctype="multipart/form-data" action="/upload">
<input type="file" name="file"&g...
Is it feasible to do (serious) web development in Lisp? [closed]
... one of Common Lisp's strengths today.
As a web server, use Hunchentoot, formerly known as tbnl, by Dr. Edmund Weitz.
You can run it as a back-end to Apache using mod_proxy as a reverse proxy, or as a stand-alone server.
Various HTML generation solutions are available, from PHP-style templates to...
Rails: fields_for with index?
...gt;
From:
http://railsapi.com/doc/rails-v3.0.4/classes/ActionView/Helpers/FormHelper.html#M006456
It’s also possible to specify the
instance to be used:
<%= form_for @person do |person_form| %>
...
<% @person.projects.each do |project| %>
<% if project.active? %&g...
Why is division in Ruby returning an integer instead of decimal value?
... This is the fastest method I tested, the only way to get more performance is to divide operands that are floats to begin with. I've built a prime number generator in Ruby in order to learn the syntax, now I'm optimizing it to learn what works best. Here's the benchmark I put together: requ...