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How to print the contents of RDD?
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If you want to view the content of a RDD, one way is to use collect():
myRDD.collect().foreach(println)
That's not a good idea, though, when the RDD has billions of lines. Use take() to take just a few to print out:
myRDD.take(n).foreach(println)
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mysql - how many columns is too many?
...e same row? no, break them out and group them into different tables (using my example form my previous comment): "Person", "Activities" "HealthRecords". Storing a SUM for performance reasons is a completely different issue than keeping all data in 70 columns to avoid joins.
– K...
Remove a cookie
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@AlexR Yes. Doesn't really answer my point though. To my understanding, the code above does set the cookie to expire in the past (one second past the epoch), unless I am mistaken.
– PaulSkinner
May 23 '14 at 7:34
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Array.push() if does not exist?
How can I push into an array if neither values exist? Here is my array:
23 Answers
23
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What's the difference between “Write-Host”, “Write-Output”, or “[console]::WriteLine”?
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From my testing Write-Output and [Console]::WriteLine() perform much better than Write-Host.
Depending on how much text you need to write out this may be important.
Below if the result of 5 tests each for Write-Host, Write-Outpu...
What are the “must have” jQuery plugins? [closed]
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My list:
Autocomplete
Input field to enable users quickly finding and selecting some value, leveraging searching and filtering.
JSON
JSON plugin retrieving retrieving and manipulating json data.
Cookie
Simple &...
Credit card expiration dates - Inclusive or exclusive?
... haha...good point. i never realized that it was so explicate myself!
– Stu Thompson
Sep 10 '08 at 13:37
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Change priorityQueue to max priorityqueue
...ity q the lhs<rhs returs +1; what you wrote here is minimum q after my testing
– sivi
Mar 3 '15 at 20:26
For re...
Check if SQL Connection is Open or Closed
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You should be using SqlConnection.State
e.g,
using System.Data;
if (myConnection != null && myConnection.State == ConnectionState.Closed)
{
// do something
// ...
}
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imp...
Circular list iterator in Python
...tor.next() visible in python 3.0? for a more in-depth explanation. Updated my answer accordingly.
– Lukas Graf
Aug 21 '15 at 18:54
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