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How to concatenate strings of a string field in a PostgreSQL 'group by' query?
...or
combined with array_to_string() to
format it as a list:
http://www.postgresql.org/docs/current/static/xaggr.html
I'd link to the 8.4 development docs but they don't seem to list this feature yet.
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How do you test that a Python function throws an exception?
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from: http://www.lengrand.fr/2011/12/pythonunittest-assertraises-raises-error/
First, here is the corresponding (still dum :p) function in file dum_function.py :
def square_value(a):
"""
Returns the square value of a.
"""
tr...
How to call asynchronous method from synchronous method in C#?
...read) that has comments to indicate that it is MIT Licensed by Microsoft. https://github.com/aspnet/AspNetIdentity/blob/master/src/Microsoft.AspNet.Identity.Core/AsyncHelper.cs
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Javascript callback when IFRAME is finished loading?
...the content of the iframe:
<h1>Child</h1>
<a href="http://www.google.com/">Google</a>
<p>Use the preceeding link to change the src of the iframe
to see what happens when the src domain is different from
that of the parent page</p>
...
How do I change read/write mode for a file using Emacs?
...
See the other useful commands on files in a directory listing at
http://www.gnu.org/s/libtool/manual/emacs/Operating-on-Files.html
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How can I use a C++ library from node.js?
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Becareful with swig and C++:
http://www.swig.org/Doc1.3/SWIG.html#SWIG_nn8
Running SWIG on C++ source files (what would appear in a .C or .cxx file) is not recommended. Even though SWIG can parse C++ class declarations, it ignores declarations that are deco...
Should IBOutlets be strong or weak under ARC?
...rong should be the default and that the developer docs are being updated.
https://twitter.com/_danielhall/status/620716996326350848
https://twitter.com/_danielhall/status/620717252216623104
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Easiest way to open a download window without navigating away from the page
...ilePath.lastIndexOf('/') + 1);
link.click();
}
downloadFile("http://www.adobe.com/content/dam/Adobe/en/accessibility/pdfs/accessing-pdf-sr.pdf");
Note:
You have to use the link.download attribute so the browser doesn't
open the file in a new tab and fires the download pop-up.
This wa...
How to force file download with PHP
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Read the docs about built-in PHP function readfile
$file_url = 'http://www.myremoteserver.com/file.exe';
header('Content-Type: application/octet-stream');
header("Content-Transfer-Encoding: Binary");
header("Content-disposition: attachment; filename=\"" . basename($file_url) . "\"");
readfile(...
How do I programmatically determine operating system in Java?
.../dso/tags/2.6.4/code/base/common/src/com/tc/util/runtime/Os.java
* http://www.docjar.com/html/api/org/apache/commons/lang/SystemUtils.java.html
*/
import java.util.Locale;
public static final class OsCheck {
/**
* types of Operating Systems
*/
public enum OSType {
Windows, MacOS, Lin...