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Good MapReduce examples [closed]
...erations that you can do in MapReduce is the set of normal SQL operations: SELECT, SELECT WHERE, GROUP BY, ect.
Another good example is matrix multiply, where you pass one row of M and the entire vector x and compute one element of M * x.
...
How to reduce iOS AVPlayer start delay
...ly be faster and more reliable due to less data. While you are playing the selected piece, you have enough time to prepare the AVPlayer for the rest of the selected follow up video in the background. When the beginning is finished, you switch to the prepared AVPlayer. So in total, you at any given t...
Custom views with Storyboard
...get within the same storyboard, and it is possible. Here's how you do it:
Select your view controller in IB (click on the black bar below the view), then drag a UIView from the Object Library into the black bar:
When a view is in the black bar, it's instantiated like any other view in IB but just...
Alter MySQL table to add comments on columns
...
Script for all fields on database:
SELECT
table_name,
column_name,
CONCAT('ALTER TABLE `',
TABLE_SCHEMA,
'`.`',
table_name,
'` CHANGE `',
column_name,
'` `',
column_name,
'` ',
column_typ...
Visual Studio 2013 and BitBucket
...oject!
In your "Solution Explorer", right click on your solution name, and select "Add Solution to Source Control ...".
Go to your "Team Explorer" and click on the "Manage Connections" icon on the top.
Double click on your Repository name under the "Local Git Repositories" section.
Now click on the ...
LINQ Aggregate algorithm explained
...ggregate help readability? In general I love LINQ because I think .Where, .Select, .OrderBy and so on greatly helps readability (if you avoid inlined hierarhical .Selects). Aggregate has to be in Linq for completeness reasons but personally I am not so convinced that .Aggregate adds readability comp...
How to automatically generate N “distinct” colors?
I wrote the two methods below to automatically select N distinct colors. It works by defining a piecewise linear function on the RGB cube. The benefit of this is you can also get a progressive scale if that's what you want, but when N gets large the colors can start to look similar. I can also imagi...
How to move files from one git repo to another (not a clone), preserving history
...eve it will appear to have been created at the point it was moved into the selected subdirectory. If you want to select just one file, have a look at --index-filter in the filter-branch manpage.
– Cascabel
Apr 3 '12 at 16:48
...
When to Redis? When to MongoDB? [closed]
...e, writing stupid sql statements... not just one but freaking everywhere. "select this, select that". But in particular you remember the irritating WHERE clause. Where lastname equals "thornton" and movie equals "bad santa." Urgh. You think, "why don’t those dbas just do their job and give me som...
What is Full Text Search vs LIKE
... can enable support for leading wildcards by pre-compiling suffix trees in selected fields.
Other features typical of full-text search are
lexical analysis or tokenization—breaking a
block of unstructured text into
individual words, phrases, and
special tokens
morphological
analysis, or stemmi...