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How to read multiple text files into a single RDD?
I want to read a bunch of text files from a hdfs location and perform mapping on it in an iteration using spark.
10 Answers...
What's the difference between => , ()=>, and Unit=>
...what is passed is substituted for the value name inside the function. For example, take this function:
def f(x: => Int) = x * x
If I call it like this
var y = 0
f { y += 1; y }
Then the code will execute like this
{ y += 1; y } * { y += 1; y }
Though that raises the point of what happens...
SQlite Getting nearest locations (with latitude and longitude)
...base, and I want to get the nearest locations to the parameters I put in (ex. My current location - lat/lng, etc.).
5 Answe...
How to prevent column break within an element?
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The correct way to do this is with the break-inside CSS property:
.x li {
break-inside: avoid-column;
}
Unfortunately, as of October 2019, this is not supported in Firefox but it is supported by every other major browser. With Chrome, I was able to use the above code, but I couldn't ma...
How to remove a key from Hash and get the remaining hash in Ruby/Rails?
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Rails has an except/except! method that returns the hash with those keys removed. If you're already using Rails, there's no sense in creating your own version of this.
class Hash
# Returns a hash that includes everything but the given ...
Copy folder recursively, excluding some folders
...der including hidden files and folders into another folder, but I want to exclude certain specific folders. How could I achieve this?
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How to loop through all the properties of a class?
... " + property.Name + ", Value: " + property.GetValue(obj, null));
}
for Excel - what tools/reference item must be added to gain access to BindingFlags, as there is no "System.Reflection" entry in the list
Edit: You can also specify a BindingFlags value to type.GetProperties():
BindingFlags flags...
What is the difference/usage of homebrew, macports or other package installation tools? [closed]
...udo apt-get in Ubuntu. I've heard that I should use homebrew but I'm not exactly sure what homebrew or macports does?
4 A...
c++ boost::multi_index composite keys efficiency - c++1y / stl - 清泛IT社区，为创新赋能！
...ime reader first time poster! I'm playing around with the boost::multi_index container stuff and have a rather in-depth question that hopefully a boost or C++ container expert might know (my knowledge in C++ containers is pretty basic). For reference, the boost documentation on composite keys can be...
How to find the port for MS SQL Server 2008?
...port is 1433 but some how it is not listening at this port. The SQL is an Express edition.
13 Answers
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