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what's the difference between “hadoop fs” shell commands and “hdfs dfs” shell commands?
...etween hdfs dfs and hadoop fs. They're simply different naming conventions based on which version of Hadoop you're using. For example, the notes in 1.2.1 use hdfs dfs while 0.19 uses hadoop fs. Notice that the separate commands are described verbatim. They are used identically.
Also note that both ...
What kind of leaks does automatic reference counting in Objective-C not prevent or minimize?
...he published specification goes into in detail.
Much of the new behavior, based on keeping objects around as long as there is a strong pointer to them, is very similar to garbage collection on the Mac. However, the technical underpinnings are very different. Rather than having a garbage collector...
Java to Clojure rewrite
...lop data access routines that can persist these structures to/from the database or network or legacy Java code as needed. The reason to keep this very separate is that you don't want persistence logic tied up with your "business logic" functions. You might want to look at ClojureQL for this, though ...
Rename specific column(s) in pandas
...is argument was introduced in v0.21.
Index.str.replace() for string/regex based replacement.
If you need to rename ALL columns at once,
DataFrame.set_axis() method with axis=1. Pass a list-like sequence. Options are available for in-place modification as well.
rename with axis=1
df = pd.DataFr...
Do on-demand Mac OS X cloud services exist, comparable to Amazon's EC2 on-demand instances? [closed]
...their is a pay as you go plan at $1/hr. I'd probably go with pay as you go based on my usage. The pay as you go is based on prepaid credits (1 credit = 1 hour, billed at 30 credit increments). One caveat is that you need to periodically use the plan at least once every 60 days for the pay as you go ...
Get Android API level of phone currently running my application [duplicate]
...uild.VERSION_CODES Human Version Name
1 BASE Android 1.0 (no codename)
2 BASE_1_1 Android 1.1 Petit Four
3 CUPCAKE Android 1.5 Cupcake
4 DONUT ...
How to load db:seed data into test database automatically?
...nder require 'rspec/rails' in my rails_helper file. If you are using database_cleaner gem - it will require a little tweaking to make sure you don't lose your seed data after each test and you can find that in the documentation of the gem it self
– MageeWorld
...
MySQL with Node.js
...me from a PHP background, so I'm fairly used to using MySQL for all my database needs.
9 Answers
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Get spinner selected items text?
... the actual text. I got a string representing a cursor object: android.database.sqlite.SQLiteCursor@410dfae8probably because I used a cursor adapter. Any idea what I should do to get the right string?
– AdamMc331
Nov 27 '14 at 19:21
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How do I find Waldo with Mathematica?
... into a format that the classification algorithm could learn from. A block-based decomposition that assesses all subsections of the image would also be required ... but this is made easier by the fact that Waldo is a) always roughly the same size and b) always present exactly once in each image.
Obt...