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Why do == comparisons with Integer.valueOf(String) give different results for 127 and 128?
...returning an Integer object, which may have its values cached between -128 and 127. This is why the first value returns true - it's cached - and the second value returns false - 128 isn't a cached value, so you're getting two separate Integer instances.
It is important to note that you are compari...
Apache and Node.js on the Same Server
... because it's swift, uses the same language I am using on the client side, and it's non-blocking by definition. But the guy who I hired to write the program for file handling (saving, editing, renaming, downloading, uploading files, etc.), he wants to use apache. So, I must:
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Search for “does-not-contain” on a DataFrame in pandas
I've done some searching and can't figure out how to filter a dataframe by df["col"].str.contains(word) , however I'm wondering if there is a way to do the reverse: filter a dataframe by that set's compliment. eg: to the effect of !(df["col"].str.contains(word)) .
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I want to copy table contained from one database and insert onto another database table
...base instead of just one table. For that I'd recommend using mysqldump command.
– thorne51
Jun 18 '14 at 9:33
MySQL ca...
What's the status of multicore programming in Haskell?
...at's the status of multicore programming in Haskell? What projects, tools, and libraries are available now? What experience reports have there been?
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Persistence unit as RESOURCE_LOCAL or JTA?
...nough.
JTA is also used for managing transactions across systems like JMS and JCA, but that's fairly exotic usage for most of us.
To use JTA, you need support for it in your application server, and also support from the JDBC driver.
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Should I URL-encode POST data?
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General Answer
The general answer to your question is that it depends. And you get to decide by specifying what your "Content-Type" is in the HTTP headers.
A value of "application/x-www-form-urlencoded" means that your POST body will need to be URL encoded just like a GET parameter string. A va...
Min/Max of dates in an array?
How can I find out the min and the max date from an array of dates? Currently, I am creating an array like this:
11 Answers...
Where should virtualenvs be created?
...ich keeps all virtualenvs in the same place (the ~/.virtualenvs directory) and allows shortcuts for creating and keeping them there. For example, you might do:
mkvirtualenv djangoproject
and then later:
workon djangoproject
It's probably a bad idea to keep the virtualenv directory in the proje...
How to un-commit last un-pushed git commit without losing the changes
...e to dig it from reflog in case you screw up :) )
revert commit normally and push
git checkout master
git revert a8172f36 #hash of the commit you want to destroy
# this introduces a new commit (say, it's hash is 86b48ba) which removes changes, introduced in the commit in question (but those chan...