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Save PL/pgSQL output from PostgreSQL to a CSV file
... CSV HEADER' > groups.csv
Or on a kubernetes cluster, in docker, over HTTPS??:
kubectl exec -t postgres-2592991581-ws2td 'psql -d mydb -c "COPY groups TO STDOUT WITH CSV HEADER"' > groups.csv
So versatile, much commas!
Do you even?
Yes I did, here are my notes:
The COPYses
Using /copy...
Quicksort vs heapsort
Both quicksort and heapsort do in-place sorting. Which is better? What are the applications and cases in which either is preferred?
...
What is the reason for performing a double fork when creating a daemon?
I'm trying to create a daemon in python. I've found the following question , which has some good resources in it which I am currently following, but I'm curious as to why a double fork is necessary. I've scratched around google and found plenty of resources declaring that one is necessary, but not ...
How to get the number of characters in a std::string?
... "hello";
std::cout << str << ":" << str.length();
// Outputs "hello:5"
If you're using a c-string, call strlen().
const char *str = "hello";
std::cout << str << ":" << strlen(str);
// Outputs "hello:5"
Or, if you happen to like using Pascal-style strings (or...
Are custom elements valid HTML5?
...re added to HTML.
Some Resources
Example Web Components are available at https://WebComponents.org
WebComponents.js serves as a polyfill for Web Components until they are supported everywhere. See also the WebComponents.js github page & web browser support table.
...
Difference between private, public, and protected inheritance
All of the questions I've found on SO deal with specific cases.
16 Answers
16
...
Why don't Java Generics support primitive types?
...eUploader: {
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Can I use my existing git repo with openshift?
...ch was demonstrating how to use the openshift-java-client some months ago: https://community.jboss.org/wiki/Enable-openshift-ciFullExampleUsingOpenshift-java-client . You'll spot the above steps in the last paragraph "We're almost there".
...
Change / Add syntax highlighting for a language in Sublime 2/3
...Syntax highlighting is controlled by the theme you use, accessible through Preferences -> Color Scheme. Themes highlight different keywords, functions, variables, etc. through the use of scopes, which are defined by a series of regular expressions contained in a .tmLanguage file in a language's d...
Using i and j as variables in Matlab
...such there is no need to avoid using i. Then again, as Dennis pointed out (https://stackoverflow.com/a/14893729/1967396), it can be hard to see the difference between 1i and ii. My suggestion: use 1j as the imaginary constant where possible. It's the same trick that electrical engineers employ - the...