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Differences between INDEX, PRIMARY, UNIQUE, FULLTEXT in MySQL?
...stems (such as MySQL's InnoDB) will store a table's records on disk in the order in which they appear in the PRIMARY index.
FULLTEXT indexes are different from all of the above, and their behaviour differs significantly between database systems. FULLTEXT indexes are only useful for full text searc...
How can I plot separate Pandas DataFrames as subplots?
..._subplot() which takes subplot grid parameters such as 221, 222, 223, 224, etc. as described in the post here. Nice examples of plot on pandas data frame, including subplots, can be seen in this ipython notebook.
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Setting CSS pseudo-class rules from JavaScript
...to change the CSS rules for pseudo-class selectors (such as :link, :hover, etc.) from JavaScript.
12 Answers
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What is the difference between DSA and RSA?
... used both for encryption and digital signatures,
simply by reversing the order in which the exponents are used:
the secret exponent (d) to create the signature, the public exponent (e)
for anyone to verify the signature. Everything else is identical.
DSA (Digital Signature Algorithm)
DSA is ...
What is PostgreSQL explain telling me exactly?
...one clear example. Here's the same query from before but now containing an ORDER BY clause:
EXPLAIN SELECT * FROM post ORDER BY body LIMIT 50;
Limit (cost=23283.24..23283.37 rows=50 width=422)
-> Sort (cost=23283.24..23859.27 rows=230412 width=422)
Sort Key: body
-> Seq...
How to define two angular apps / modules in one page?
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Have you tried to invert order of the 2 modules ?('otherModule' before 'app') Because, I use this solution a lot and it works perfectly...
– Monkey Monk
Mar 3 '15 at 17:05
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Prevent double submission of forms in jQuery
...ent so that duplicate submissions are harmless.
Eg, if the form creates an order, put a unique ID in the form. The first time the server sees an order creation request with that id, it should create it and respond "success". Subsequent submissions should also respond "success" (in case the client di...
Any good, visual HTML5 Editor or IDE? [closed]
... feature, I wish to have IDE that aware of HTML5 API like Web Storage API etc, when I type window <dot>, the sessionStorage and localStorage etc object autocompletion do not appear...
– Lee Chee Kiam
Mar 15 '12 at 9:09
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EF Migrations: Rollback last applied migration?
...value. Likewise, if you have applied migrations A, B, C, D, and E (in that order), then the ordinal 1 should refer to A, ordinal 2 should refer to B, and so on. So to rollback to B you could use either:
Update-Database -TargetMigration:"B"
or
Update-Database -TargetMigration:2
Edit October 201...
Replacing all non-alphanumeric characters with empty strings
...e second one doesn't answer the question. What about characters like : / \ etc?
– WW.
Dec 29 '14 at 4:03
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