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What is causing ERROR: there is no unique constraint matching given keys for referenced table?
...table, so in your bar table you must have a unique (name) index.
See also http://www.postgresql.org/docs/9.1/static/ddl-constraints.html#DDL-CONSTRAINTS-FK and specifically:
Finally, we should mention that a foreign key must reference columns
that either are a primary key or form a unique con...
How to do date/time comparison
...intf("Lifespan is %+v", diff)
The program outputs:
Lifespan is 3h0m0s
http://play.golang.org/p/bbxeTtd4L6
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How do you remove a Cookie in a Java Servlet
... are necessary to clear the cookie properly.
private void eraseCookie(HttpServletRequest req, HttpServletResponse resp) {
Cookie[] cookies = req.getCookies();
if (cookies != null)
for (Cookie cookie : cookies) {
cookie.setValue("");
cookie.setPath("/");
...
DialogFragment setCancelable property not working
..., because DialogFragment needs to change its behavior based on this."
ref:http://developer.android.com/reference/android/app/DialogFragment.html#setCancelable(boolean)
public class MyDialogFragment extends DialogFragment {
@Override
public Dialog onCreateDialog(Bundle savedInstanceStat...
How to put Google Maps V2 on a Fragment using ViewPager
...?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<com.google.android.gms.maps.MapView
android:id="@+id/mapView"
android:...
Sending a JSON to server and retrieving a JSON in return, without JQuery
...ng and receiving data in JSON format using POST method
//
var xhr = new XMLHttpRequest();
var url = "url";
xhr.open("POST", url, true);
xhr.setRequestHeader("Content-Type", "application/json");
xhr.onreadystatechange = function () {
if (xhr.readyState === 4 && xhr.status === 200) {
...
Is there a way to word-wrap long words in a div?
... use of word-wrap for IE, designed to break unbroken strings).
/* Source: http://snipplr.com/view/10979/css-cross-browser-word-wrap */
.wordwrap {
white-space: pre-wrap; /* CSS3 */
white-space: -moz-pre-wrap; /* Firefox */
white-space: -pre-wrap; /* Opera <7 */
wh...
How can I remove the gloss on a select element in Safari on Mac?
...nd; You have to write
-webkit-appearance:none;
in your css.
read this http://trentwalton.com/2010/07/14/css-webkit-appearance/
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How to pass an array into jQuery .data() attribute
...bute value.
If you fix your quotation marks your original code works (see http://jsfiddle.net/ktw4v/12/)
<div data-stuff='["a","b","c"]'> </div>
var stuff = $('div').data('stuff');
When jQuery sees valid JSON in a data attribute it will automatically unpack it for you.
...
How to make overlay control above all other controls?
...the control to be put on top a higher ZIndex.
From MSDN:
<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" WindowTitle="ZIndex Sample">
<Canvas>
<Rectangle Canvas.ZIndex="3" Width="100" Height="100" Canvas.Top="100" Canvas.Left="100" Fill="blue"/>
...