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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...
How to format strings in Java
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Ok fine, I have refer one .Net project like that I want, codeproject.com/Articles/42310/…, refer this project I am looking like this. If you know any project or packages available like that then please tell me. Thank you
– user3...
Regex to match any character including new lines
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In JavaScript: (START)[\s\S]*(END) - See www.regexpal.com to test
– Zymotik
Jul 15 '14 at 15:40
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Is there a way to follow redirects with command line cURL?
...to follow redirects you can use the flag -L or --location:
curl -L http://www.example.com
But, if you want limit the number of redirects, add the parameter --max-redirs
--max-redirs <num>
Set maximum number of redirection-followings allowed. If -L, --location is used, this option
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Download multiple files with a single action
...es:
function do_dl() {
download_files([
{ download: "http://www.nt.az/reg.txt", filename: "regs.txt" },
{ download: "https://www.w3.org/TR/PNG/iso_8859-1.txt", filename: "standards.txt" },
{ download: "http://qiime.org/_static/Examples/File_Formats/Example_Mapping_File.t...
Change how fast “title” attribute's tooltip appears
...ip appear, but you can use one of the tooltip plugins (here is few: http://www.1stwebdesigner.com/css/stylish-jquery-tooltip-plugins-webdesign/ ) where you can customise lot's of things, including delay.
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How is the java memory pool divided?
... called Metaspace, which will be held in native memory.
reference：http://www.programcreek.com/2013/04/jvm-run-time-data-areas/
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How do I automatically update a timestamp in PostgreSQL
...when the record is changed. This article explains it quite nicely:
http://www.revsys.com/blog/2006/aug/04/automatically-updating-a-timestamp-column-in-postgresql/
CREATE OR REPLACE FUNCTION update_modified_column()
RETURNS TRIGGER AS $$
BEGIN
NEW.modified = now();
RETURN NEW;
END;
$...
How do I use $scope.$watch and $scope.$apply in AngularJS?
...ers[0].name = 'Superstar';
$scope.$digest();
});
}
http://jsfiddle.net/2Lyn0Lkb/
$digest loop
When the browser receives an event that can be managed by the AngularJS context the $digest loop will be fired. This loop is made from two smaller loops. One processes the $evalAsync queue, and the ...
What are the true benefits of ExpandoObject?
The ExpandoObject class being added to .NET 4 allows you to arbitrarily set properties onto an object at runtime.
10 Answ...