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Symbolic links and synced folders in Vagrant
I want to use Vagrant to provide a common development environment to my team. The hosts are completely different:
6 Answers...
Error: Can't set headers after they are sent to the client
...body has already been written. For example, look for callbacks that are accidentally called twice, or any error that happens after the body is sent.
In your case, you called res.redirect(), which caused the response to become Finished. Then your code threw an error (res.req is null). and since the e...
SQL Query to concatenate column values from multiple rows in Oracle
...ring aggregation techniques. A very common one is to use LISTAGG:
SELECT pid, LISTAGG(Desc, ' ') WITHIN GROUP (ORDER BY seq) AS description
FROM B GROUP BY pid;
Then join to A to pick out the pids you want.
Note: Out of the box, LISTAGG only works correctly with VARCHAR2 columns.
...
How do you roll back (reset) a Git repository to a particular commit? [duplicate]
...
git reset --hard <tag/branch/commit id>
Notes:
git reset without the --hard option resets the commit history, but not the files. With the --hard option the files in working tree are also reset. (credited user)
If you wish to commit that state so that t...
How do I remove the first characters of a specific column in a table?
...erate on, and the number of characters to return (starting at the "right" side of the string). LEN returns the length of the column data, and we subtract four so that our RIGHT function leaves the leftmost 4 characters "behind".
Hope this makes sense.
Edit again - I just read Andrew's response, a...
What does the `forall` keyword in Haskell/GHC do?
...Type Variables:
Scoped type variables helps one specify types for code inside where clauses. It makes the b in val :: b the same one as the b in foob :: forall a b. (b -> b) -> b -> (a -> b) -> Maybe a -> b.
A confusing point: you may hear that when you omit the forall from a typ...
Centering floating divs within another div
...ivs,
use display: inline-block. Might also be wise to give them explicit widths too.
<div style="margin: auto 1.5em; display: inline-block;">
<img title="Nadia Bjorlin" alt="Nadia Bjorlin" src="headshot.nadia.png"/>
<br/>
Nadia Bjorlin
</div>
...
How can I merge two hashes without overwritten duplicate keys in Ruby?
...
Totally agree, thanks a lot for reverse_merge! method did not know it :)
– Claudio Acciaresi
Dec 30 '09 at 15:58
...
What is the opposite of evt.preventDefault();
...ger preventing it.
Otherwise I'm inclined to point you to the answers provided by another comments and answers:
How to unbind a listener that is calling event.preventDefault() (using jQuery)?
How to reenable event.preventDefault?
Note that the second one has been accepted with an example solutio...
Is it possible to make an ASP.NET MVC route based on a subdomain?
... a custom Route:
public class ExampleRoute : RouteBase
{
public override RouteData GetRouteData(HttpContextBase httpContext)
{
var url = httpContext.Request.Headers["HOST"];
var index = url.IndexOf(".");
if (index < 0)
return null;
var subDo...