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“Single-page” JS websites and SEO
...re are a lot of cool tools for making powerful "single-page" JavaScript websites nowadays. In my opinion, this is done right by letting the server act as an API (and nothing more) and letting the client handle all of the HTML generation stuff. The problem with this "pattern" is the lack of search en...
Are email addresses case sensitive?
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One of the things I'm most frustrated by is sites forcing me to write my email in all-lower-case. Just fired off an angry comment to Twitch.tv about that very thing in regards to their support site. They block you from even entering upper-case on their site. So whil...
How to display Base64 images in HTML?
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If you have PHP on the back-end, you can use this code:
$image = 'http://images.itracki.com/2011/06/favicon.png';
// Read image path, convert to base64 encoding
$imageData = base64_encode(file_get_contents($image));
// Format the image...
How do I see all foreign keys to a table or column?
...s people ended up here when really they were looking for the answer to the opposite question, found their answer here anyway, and didn't bother reading the original question (or even its title) before upvoting.
– Mark Amery
Sep 4 '14 at 15:25
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Get name of current script in Python
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WHAT!!! Did you even try this? Exactly the opposite is true. The questioner asked for the name of the python script that is running - not the python file which is currently executing. Imagine that you have a script that, when an error occurs, prints the script name a...
typecast string to integer - Postgres
...ing into an integer.
Solution
Create a user-defined function inspired by PHP's intval() function.
CREATE FUNCTION intval(character varying) RETURNS integer AS $$
SELECT
CASE
WHEN length(btrim(regexp_replace($1, '[^0-9]', '','g')))>0 THEN btrim(regexp_replace($1, '[^0-9]', '','g'))::intege...
What is the difference between linear regression and logistic regression?
...arge errors are penalized quadratically.
Logistic regression is just the opposite. Using the logistic loss function causes large errors to be penalized to an asymptotically constant.
Consider linear regression on categorical {0, 1} outcomes to see why this is a problem. If your model predicts the...
Can a program depend on a library during compilation but not runtime?
...g implementation at runtime. You need only SSL4J itself at compile time.
Opposite example when you need more dependencies at compile time than at runtime.
Think that you are developing application that has to work at different environments or operating systems. You need all platform specific libra...
Get value of c# dynamic property via string
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public static object GetProperty(object target, string name)
{
var site = System.Runtime.CompilerServices.CallSite<Func<System.Runtime.CompilerServices.CallSite, object, object>>.Create(Microsoft.CSharp.RuntimeBinder.Binder.GetMember(0, name, target.GetType(), new[]{Microsoft.CSh...
How to skip over an element in .map()?
...tely),
rather than always one-to-one. In this sense, it works like the
opposite of filter. Simply return a 1-element array to keep the item,
a multiple-element array to add items, or a 0-element array to remove
the item.
...