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Show percent % instead of counts in charts of categorical variables
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You might need to prefix percent with the package it's from to get the above to work (I did). ggplot(mtcars, aes(x = factor(hp))) + geom_bar(aes(y = (..count..)/sum(..count..))) + scale_y_continuous(labels = scales::percent)
– mammykins
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Check if object exists in JavaScript
...and less error-prone built-in. The string comparison prevents the compiler from 100% reliably tell us when we made a small mistake (like a typo) in these kinds of checks.
– Domi
Nov 24 '13 at 9:14
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Unix command to prepend text to a file
...form the output. The - means standard input, which is provide via the pipe from echo.
echo -e "to be prepended \n another line" | cat - text.txt
To rewrite the file a temporary file is required as cannot pipe back into the input file.
echo "to be prepended" | cat - text.txt > text.txt.tmp
mv ...
stop all instances of node.js server
...ws. Does that make killall node an invalid command because I cannot use it from command line.
– Kiran Ambati
Feb 9 '13 at 20:10
3
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Set Focus on EditText
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This works from me:
public void showKeyboard(final EditText ettext){
ettext.requestFocus();
ettext.postDelayed(new Runnable(){
@Override public void run(){
InputMethodManager keyboard=(InputMethodMan...
How to get the command line args passed to a running process on unix/linux systems?
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Doesn't work for me using pgrep from procps-ng 3.3.15 and 3.3.12. Just prints the pid and prorgam name without arguments.
– Socowi
Sep 20 '19 at 15:08
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Counting the number of elements with the values of x in a vector
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There is also count(numbers) from plyr package. Much more convenient than table in my opinion.
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Try/Catch block in PHP not catching Exception
I am trying to run this Example #1 from this page: http://php.net/manual/en/language.exceptions.php
12 Answers
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Asynchronously load images with jQuery
...uery/ajax and return a HTTP 304 (Not modified) and then use original image from cache if its already there. The above method reduces an empty request to server after the first loop of images in the gallery.
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How to fix org.hibernate.LazyInitializationException - could not initialize proxy - no Session
... to use the JOIN FETCH directive:
Query query = session.createQuery(
"from Model m " +
"join fetch m.modelType " +
"where modelGroup.id = :modelGroupId"
);
Anyway, DO NOT use the following Anti-Patterns as suggested by some of the answers:
Open Session in View
hibernate.enable_lazy_...