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ERROR: permission denied for sequence cities_id_seq using Postgres
...SQL 8.2 you have to use:
GRANT USAGE, SELECT ON SEQUENCE cities_id_seq TO www;
GRANT USAGE - For sequences, this privilege allows the use of the currval and nextval functions.
Also as pointed out by @epic_fil in the comments you can grant permissions to all the sequences in the schema with:
GR...
How to validate a url in Python? (Malformed or not)
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r'(?:/?|[/?]\S+)$', re.IGNORECASE)
print(re.match(regex, "http://www.example.com") is not None) # True
print(re.match(regex, "example.com") is not None) # False
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{" was not expected.} Deserializing Twitter XML
...lRoot attribute which will be used at compile time.
[XmlRoot(Namespace = "www.contoso.com", ElementName = "MyGroupName", DataType = "string", IsNullable=true)]
Or specify the root attribute when de serializing at runtime.
XmlRootAttribute xRoot = new XmlRootAttribute();
xRoot.ElementName = "user...
How to delete or add column in SQLITE?
...e a column, or add or
remove constraints from a table.
source : http://www.sqlite.org/lang_altertable.html
While you can always create a new table and then drop the older one.
I will try to explain this workaround with an example.
sqlite> .schema
CREATE TABLE person(
id INTEGER PRIMARY KE...
Clean way to launch the web browser from shell script?
...
OSX:
$ open -a /Applications/Safari.app http://www.google.com
or
$ open -a /Applications/Firefox.app http://www.google.com
or simply...
$ open some_url
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Can I use require(“path”).join to safely concatenate urls?
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Usage
var urljoin = require('url-join');
var fullUrl = urljoin('http://www.google.com', 'a', '/b/cd', '?foo=123');
console.log(fullUrl);
Prints:
'http://www.google.com/a/b/cd?foo=123'
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Max parallel http connections in a browser?
...ectionsPerHostname and the second value is MaxConnections.
Source: http://www.browserscope.org/?category=network&v=top
Note: ConnectionsPerHostname is the maximum number of concurrent http requests that browsers will make to the same domain.
To increase the number of concurrent connections, o...
How can I see the request headers made by curl when sending a request to the server?
...hake process when accessing website through HTTPS, such as curl -v https://www.example.com; second, it also prints the CONNECT request if you are visiting the site through HTTP proxy, such as curl --proxy my-proxy:8080 http://www.example.com. I believe it would help more users if some examples of th...
What are some good resources for learning about Artificial Neural Networks? [closed]
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Here are some example of Neural Net programming.
http://www.codeproject.com/KB/recipes/neural_dot_net.aspx
you can start reading here:
http://web.archive.org/web/20071025010456/http://www.geocities.com/CapeCanaveral/Lab/3765/neural.html
I for my part have visited a course about ...
Difference between static STATIC_URL and STATIC_ROOT on Django
...tic will collect static files for deployment.
Example: STATIC_ROOT="/var/www/example.com/static/"
now the command ./manage.py collectstatic will copy all the static files(ie in static folder in your apps, static files in all paths) to the directory /var/www/example.com/static/. now you only need...