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What's invokedynamic and how do I use it?
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It is a new JVM instruction which allows a compiler to generate code which calls methods with a looser specification than was previously possible -- if you know what "duck typing" is, invokedynamic basically allows for duck typing. There's not too much you as a Java p...
Database cluster and load balancing
...rgot about replication :) Yes, you can achieve load balancing that way in combination w/ application level logic :). +1
– Jimmy Chandra
Jul 22 '09 at 14:46
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Get exception description and stack trace which caused an exception, all as a string
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Storing images in SQL Server?
...ou decide to put your pictures into a SQL Server table, I would strongly recommend using a separate table for storing those pictures - do not store the employee photo in the employee table - keep them in a separate table. That way, the Employee table can stay lean and mean and very efficient, assumi...
difference and when to use getApplication(), getApplicationContext(), getBaseContext() and someClass
...xt is just information about an environment right?
– committedandroider
Nov 20 '14 at 4:03
Yes, its like the sandbox t...
How to form tuple column from two columns in Pandas
I've got a Pandas DataFrame and I want to combine the 'lat' and 'long' columns to form a tuple.
4 Answers
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How to write header row with csv.DictWriter?
...eaders)
for row in dr:
dw.writerow(row)
As @FM mentions in a comment, you can condense header-writing to a one-liner, e.g.:
with open(outfile,'wb') as fou:
dw = csv.DictWriter(fou, delimiter='\t', fieldnames=dr.fieldnames)
dw.writerow(dict((fn,fn) for fn in dr.fieldnames))
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Difference between WebStorm and PHPStorm
...u should train your search-fu twice as harder.
FROM: http://www.jetbrains.com/phpstorm/
NOTE: PhpStorm includes all the functionality of WebStorm (HTML/CSS Editor, JavaScript Editor) and adds full-fledged support for PHP and Databases/SQL.
Their forum also has quite few answers for such quest...
How to replace captured groups only?
...ssible in a replace with a $, so the first word (\w+) is in a group, and becomes $1, the middle part (\d+) is the second group, (but gets ignored in the replace), and the third group is $3. So when you give the replace string of "$1!new_ID!$3", the $1 and $3 are replaced automagically with the first...