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PostgreSQL - fetch the row which has the Max value for a column
...and running "Query/Explain (F7)" on the query with "Query/Explain options" set to "Analyze"
Quassnoy's query has a cost estimate of 745k (!), and completes in 1.3 seconds (given a compound index on (usr_id, trans_id, time_stamp))
Bill's query has a cost estimate of 93k, and completes in 2.9 second...
How can I use numpy.correlate to do autocorrelation?
I need to do auto-correlation of a set of numbers, which as I understand it is just the correlation of the set with itself.
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Hidden features of Eclipse [closed]
...tart typing name of a method you can overload, Ctrl-Space, pick one
getter/setter creation: type “get”, Ctrl-Space, choose a getter to create; same with “is” and “set”
Assign To A New Field
This is how I add fields.
If you have no constructors yet, add one. (Ctrl-Space anywhere in a...
Node.js app can't run on port 80 even though there's no other process blocking the port
...s I suppose the best practice would be to run on a different port and just set up a port-forwarding rule as mentioned here: stackoverflow.com/questions/16573668/…
– AlexMA
Oct 8 '13 at 13:16
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How do you organise multiple git repositories, so that all of them are backed up together?
...loaded without the rest) in such a way that people can work on specific subsets without knowing about the rest of it.
– peterk
Oct 5 '11 at 18:41
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How to convert R Markdown to PDF?
... copy of pandoc through RStudio, I can use the following:
Rscript -e "Sys.setenv(RSTUDIO_PANDOC='/Applications/RStudio.app/Contents/MacOS/pandoc');library(rmarkdown); library(utils); render('input.Rmd', 'pdf_document')"
Old Answer (circa 2012)
So, a number of people have suggested that Pandoc...
What is Double Brace initialization in Java?
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The first brace creates a new Anonymous Inner Class.
The second set of brace creates an instance initializers like static block in Class.
For example:
public class TestHashMap {
public static void main(String[] args) {
HashMap<String,String> map = new HashMap<...
Check if UIColor is dark or bright?
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I used this code, worked perfectly, but dont know when I set [UIColor blackColor], it returns darknessScore = 149.685. Can you explain why this is happening ?
– DivineDesert
Jun 20 '14 at 20:02
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How to render a DateTime object in a Twig template
...names are lowercase. And German dates have a dot appended.
Installation / setting the locale
Installation instructions for the Intl extension can be found in this seperate answer.
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How to concatenate string variables in Bash
...st element only!
So to retrieve our seven field array, we only need to re-set 1st element:
a=36
declare -p a
declare -a a='([0]="36" [1]="18" [2]="one" [3]="word" [4]="hello world!" [5]="he
llo world!" [6]="hello world!")'
One argument format string with many argument passed to:
printf -v a[0] ...