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Create an index on a huge MySQL production table without table locking
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[2017] Update: MySQL 5.6 has support for online index updates
https://dev.mysql.com/doc/refman/8.0/en/innodb-online-ddl-operations.html#online-ddl-index-syntax-notes
In MySQL 5.6 and higher, the table remains available fo...
Regex to match any character including new lines
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201
Add the s modifier to your regex to cause . to match newlines:
$string =~ /(START)(.+?)(END)/...
Python pandas Filtering out nan from a data selection of a column of strings
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264
Just drop them:
nms.dropna(thresh=2)
this will drop all rows where there are at least two n...
How to trigger Autofill in Google Chrome?
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UPDATE for 2017: Looks like the answer from Katie has more up-to-date information than mine. Future readers: give your up-votes to her answer.
This is a great question and one for which documentation is surprisingly hard to come by. Ac...
Format decimal for percentage values?
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428
Use the P format string. This will vary by culture:
String.Format("Value: {0:P2}.", 0.8526) //...
Java URL encoding of query string parameters
... "UTF-8".
Note that spaces in query parameters are represented by +, not %20, which is legitimately valid. The %20 is usually to be used to represent spaces in URI itself (the part before the URI-query string separator character ?), not in query string (the part after ?).
Also note that there are t...
Open-Source Examples of well-designed Android Applications? [closed]
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edited Feb 23 '13 at 16:51
Jesse Rusak
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Returning multiple objects in an R function [duplicate]
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224
Unlike many other languages, R functions don't return multiple objects in the strict sense. T...
Can we delete an SMS in Android before it reaches the inbox?
...ast, preventing it from being propagated to other apps.
Update (October 2013): When Android 4.4 arrives, it will make changes to the SMS APIs which may affect an app's ability to influence SMS delivery.
Check out this Android Developers blog post for some more info:
http://android-developers.blog...