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What is the difference between map and flatMap and a good use case for each?
... into a single RDD of results.
rdd.flatMap(_.split(" ")).collect
res2: Array[String] = Array("Roses", "are", "red", "Violets", "are", "blue")
We have multiple words per line, and multiple lines, but we end up with a single output array of words
Just to illustrate that, flatMapping from a c...
Small Haskell program compiled with GHC into huge binary
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2 Answers
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How do I activate C++ 11 in CMake?
...e cmake_minimum_required to require CMake 3.0 or later, or
Set policy CMP0025 to NEW with the following code at the top of your CMakeLists.txt file before the project command:
# Fix behavior of CMAKE_CXX_STANDARD when targeting macOS.
if (POLICY CMP0025)
cmake_policy(SET CMP0025 NEW)
endif ()
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XDocument.ToString() drops XML Encoding Tag
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edited May 23 '17 at 12:10
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answered Aug 4 '09 at 17:56
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Capitalize first letter. MySQL
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279
It's almost the same, you just have to change to use the CONCAT() function instead of the + op...
How to use sed to remove the last n lines of a file
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22 Answers
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Defining an array of anonymous objects in CoffeeScript
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you can't:
this is some tricks:
items:[
(name:"value1")
(name:"value2")
]
another
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redirect COPY of stdout to log file from within bash script itself
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#!/usr/bin/env bash
# Redirect stdout ( > ) into a named pipe ( >() ) running "tee"
exe...
How to debug Apache mod_rewrite
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One trick is to turn on the rewrite log. To turn it on,try these lines in your apache main con...
Maximum on http header values?
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No, HTTP does not define any limit. However most web servers do limit size of headers they acce...