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PSQLException: current transaction is aborted, commands ignored until end of transaction block
...gnored as a failed SQL statement. You are welcome to fail SQL statements all you want and PostgreSQL won't stop you.
Stay being in a transaction, but when you detect that the first SQL has failed, either rollback/re-start or commit/restart the transaction. Then you can continue failing as many S...
What special characters must be escaped in regular expressions?
...nds on the regex flavor you're working with.
For PCRE, and most other so-called Perl-compatible flavors, escape these outside character classes:
.^$*+?()[{\|
and these inside character classes:
^-]\
For POSIX extended regexes (ERE), escape these outside character classes (same as PCRE):
.^$*...
MongoDB/NoSQL: Keeping Document Change History
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Will this affect performance if indexed fields represented as arrays?
– DmitriD
Jun 14 '17 at 2:28
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How can I pass parameters to a partial view in mvc 4
...can use ViewBag to access the properties from a dynamic object rather than indexed properties, e.g.
<p>@ViewBag.Property1</p>
<p>@ViewBag.Property2</p>
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How do I iterate through children elements of a div using jQuery?
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@SouvikGhosh: the index is passed as the first argument to the callback function for each(). Check the docs, linked in the answer above.
– Andy E
Sep 22 '16 at 8:33
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What rules does Pandas use to generate a view vs a copy?
...is provided, it will modify in-place; only some operations support this
An indexer that sets, e.g. .loc/.iloc/.iat/.at will set inplace.
An indexer that gets on a single-dtyped object is almost always a view (depending on the memory layout it may not be that's why this is not reliable). This is main...
Test if executable exists in Python?
... search for set in %PATHEXT%. That's not great, but it might work for the all the cases someone needs.
– rakslice
Oct 3 '13 at 0:42
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Encoding Javascript Object to Json string
...e looking for.
var json = JSON.stringify(new_tweets);
You can also do it all at once:
var new_tweets = {
k: {
tweet_id: 98745521,
user_id: 54875,
data: {
in_reply_to_screen_name: 'other_user',
text: 'tweet_text'
}
}
}
...
Database Design for Tagging
...tion well. However, I'm not convinced it's a good idea to implement bitmap indexing "manually", like digiguru suggests: It sounds like a complicated situation whenever new tags are added(?) But some DBMSes (including Oracle) offer bitmap indexes which may somehow be of use, because a built-in indexi...
How Scalable is SQLite? [closed]
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edit: I just realized that I may not have been fair to SQLite - I didn't index any columns in the SQLite database when I was serving it from a web page. This partially caused the slowdown I was experiencing. However, the observation of database-locking stands - if you have particularly onerous upd...