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Change column type from string to float in Pandas
I want to convert a table, represented as a list of lists, into a Pandas DataFrame . As an extremely simplified example:
9...
What is the difference between Elastic Beanstalk and CloudFormation for a .NET project?
...ts (production and staging), a couple of ElasticCache clusters, a DyanmoDB table, and then the proper DNS in Route53. I then upload this template to AWS, walk away, and 45 minutes later everything is ready and waiting. Since it's just a plain-text JSON file, I can stick it in my source control whi...
How to get the connection String from a database
...From Other Sources -> From SQL Server
put in the server name, select table, etc,
When you get to the "Import Data" dialog,
click on Properties in the "Connection Properties" dialog,
select the "Definition" tab.
And there Excel nicely displays the Connection String for copying
(or ev...
Chaining multiple filter() in Django, is this a bug?
...ay suspect. It is how the WHERE and JOIN is placed.
Example1 (same joined table) :
(example from https://docs.djangoproject.com/en/dev/topics/db/queries/#spanning-multi-valued-relationships)
Blog.objects.filter(entry__headline__contains='Lennon', entry__pub_date__year=2008)
This will give you ...
Is there any way to put malicious code into a regular expression?
... spent begging the operating system for more space, and the attendant page-table set-up costs, can sometimes nudge the balancing scale further the other way and make the conversion from time to space less attractive than it would be.
– tchrist
Jan 19 '11 at 18:...
Boolean operators && and ||
... this here: http://en.wikipedia.org/wiki/Short-circuit_evaluation From the table on that page you can see that && is equivalent to AndAlso in VB.NET, which I assume you are referring to.
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Shall we always use [unowned self] inside closure in Swift
...lifetimes anyway, and it's much simpler
and lower-overhead than the side-table based implementation used for
zeroing weak references.
Update: In modern Swift weak internally uses the same mechanism as unowned does. So this comparison is incorrect because it compares Objective-C weak with Swift...
What is the difference between new/delete and malloc/free?
...ence to help with low memory.
malloc/free can NOT be overridden legally
Table comparison of the features:
Feature | new/delete | malloc/free
--------------------------+--------------------------------+-------------------------------
Memor...
When should you NOT use a Rules Engine? [closed]
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Sure: Put your stuff in a single decision table and query to get the answers you want. No need for Rete rules engine.
– duffymo
Feb 2 '15 at 15:24
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How to stop an unstoppable zombie job on Jenkins without restarting the server?
...#<build-number>
Click the red, round button on the very right in the table of the line your desired job has
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