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Introducing FOREIGN KEY constraint may cause cycles or multiple cascade paths - why?
...Stage is involved will have cascading delete enabled by default. It means, if you delete a Stage entity
the delete will cascade directly to Side
the delete will cascade directly to Card and because Card and Side have a required one-to-many relationship with cascading delete enabled by default agai...
How to declare a variable in a PostgreSQL query
... CTEs being used as vriables. But than i quickly ran into a problem where different data modifying queries in CTEs are not guaranteed to see each other's effects. I had to use multiple CTEs as i needed to use that variable in multiple queries.
– Zia Ul Rehman Mughal
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Why do most fields (class members) in Android tutorial start with `m`?
...se m for 'members' of a class. So when you're programming you can see the difference between local and member variables.
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How do I convert datetime to ISO 8601 in PHP
...Time::ATOM); // Updated ISO8601
Procedural
For older versions of PHP, or if you are more comfortable with procedural code.
echo date(DATE_ISO8601, strtotime('2010-12-30 23:21:46'));
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Convert a String representation of a Dictionary to a dictionary?
...is problem though its decoder wants double quotes around keys and values. If you don't mind a replace hack...
import json
s = "{'muffin' : 'lolz', 'foo' : 'kitty'}"
json_acceptable_string = s.replace("'", "\"")
d = json.loads(json_acceptable_string)
# d = {u'muffin': u'lolz', u'foo': u'kitty'}
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What does Connect.js methodOverride do?
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If you want to simulate DELETE and PUT, methodOverride is for that.
If you pass in the _method post parameter set to 'delete' or 'put', then you can use app.delete and app.put in Express instead of using app.post all the time...
Is a view faster than a simple query?
...I'm fairly certain that SQL Server uses some variant of a b-tree, I don't know the details. Nonetheless, the point holds.
Update 3: The question has come up about whether an Indexed View just uses an index placed on the underlying table. That is, to paraphrase: "an indexed view is just the equiva...
AJAX in Chrome sending OPTIONS instead of GET/POST/PUT/DELETE?
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Chrome is preflighting the request to look for CORS headers. If the request is acceptable, it will then send the real request. If you're doing this cross-domain, you will simply have to deal with it or else find a way to make the request non-cross-domain. This is why the jQuery bug was...
How to check if a string is a valid date
...errors which we don't expect and make the debugging of the code extremely difficult.
– yagooar
Jan 29 '13 at 10:32
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How to list all users in a Linux group?
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Unfortunately, there is no good, portable way to do this that I know of. If you attempt to parse /etc/group, as others are suggesting, you will miss users who have that group as their primary group and anyone who has been added to that group via a mechanism other than UNIX flat files (i.e. LDAP, N...