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What is causing ERROR: there is no unique constraint matching given keys for referenced 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 constraint...
What is syntax for selector in CSS for next element?
...'h1.hc-reform').next('p').addClass('first-paragraph')).
More info: http://www.w3.org/TR/CSS2/selector.html or http://css-tricks.com/child-and-sibling-selectors/
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class
...y. It has a Singleton Module just as an FYI.
This is pretty good.
https://www.youtube.com/watch?v=i4uiyWA8eFk
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What's the point of having pointers in Go?
...
I really like example taken from http://www.golang-book.com/8
func zero(x int) {
x = 0
}
func main() {
x := 5
zero(x)
fmt.Println(x) // x is still 5
}
as contrasted with
func zero(xPtr *int) {
*xPtr = 0
}
func main() {
x := 5
zero(&a...
Link to add to Google calendar
...
Here's an example link you can use to see the format:
https://www.google.com/calendar/render?action=TEMPLATE&text=Your+Event+Name&dates=20140127T224000Z/20140320T221500Z&details=For+details,+link+here:+http://www.example.com&location=Waldorf+Astoria,+301+Park+Ave+,+New+Y...
Correct use for angular-translate in controllers
... the text directly on the page for their language, and that's it: https://www.globalizeit.com/HowItWorks. No programming needed (though it can be programmatically extensible), it integrates easily with Angular: https://www.globalizeit.com/Translate/Angular, the transformation of the page happens...
Playing .mp3 and .wav in Java?
...erAPI. It's open source, very simple and it doesn't require JavaFX.
http://www.javazoom.net/jlgui/api.html
After downloading and extracting the zip-file one should add the following jar-files to the build path of the project:
basicplayer3.0.jar
all the jars from the lib directory (inside BasicPla...
Using a piano keyboard as a computer keyboard [closed]
...
A good library in .NET with full midi support (BASS), go to http://www.un4seen.com.
And for the other part, translating keyboard midi notes to keys and more, I would go for AutoItX, the ActiveX/COM and DLL interface to autoIt. Info and download, go to http://www.autoitscript.com/site/autoit...
Change text color based on brightness of the covered background area?
...ndom() * 255);
rgb[2] = Math.round(Math.random() * 255);
// http://www.w3.org/TR/AERT#color-contrast
const brightness = Math.round(((parseInt(rgb[0]) * 299) +
(parseInt(rgb[1]) * 587) +
(parseInt(rgb[2]) * 114)) / 1000);
const textColour = ...
Mixing Angular and ASP.NET MVC/Web api?
...cts that I worked.
Material
https://material.angular.io/
PrimeNG
https://www.primefaces.org/primeng/#/
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