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Programmatically change log level in Log4j2
I'm interested in programmatically changing the log level in Log4j2. I tried looking at their configuration documentation but that didn't seem to have anything. I also tried looking in the package: org.apache.logging.log4j.core.config , but nothing in there looked helpful either.
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How do you know what to test when writing unit tests? [closed]
Using C#, I need a class called User that has a username, password, active flag, first name, last name, full name, etc.
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How to auto-remove trailing whitespace in Eclipse?
...to Code organizing tab -> check Remove trailing whitespace -> select All lines.
Removing whitespace only from the lines I changed:
Preferences -> Java -> Editor -> Save Actions -> check "Perform the selected actions on save -> check Format source code -> select Format edi...
How to select where ID in Array Rails ActiveRecord without exception
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If it is just avoiding the exception you are worried about, the "find_all_by.." family of functions works without throwing exceptions.
Comment.find_all_by_id([2, 3, 5])
will work even if some of the ids don't exist. This works in the
user.comments.find_all_by_id(potentially_nonexistent_id...
Laravel Check If Related Model Exists
...hp 7.2+ you can't use count on the relation object, so there's no one-fits-all method for all relations. Use query method instead as @tremby provided below:
$model->relation()->exists()
generic solution working on all the relation types (pre php 7.2):
if (count($model->relation))
{
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Disable browser's back button
... not obliged to do AFAIK) they still provide a way to reload that page (usually after showing a warning dialog). So if you really don't want your users going back to that page, this may be worse, since the request for that page will HAVE to make its way all the way to the origin server. You will n...
Smooth scrolling when clicking an anchor link
...te April 2018: There's now a native way to do this:
document.querySelectorAll('a[href^="#"]').forEach(anchor => {
anchor.addEventListener('click', function (e) {
e.preventDefault();
document.querySelector(this.getAttribute('href')).scrollIntoView({
behavior: 'smo...
Redis key naming conventions?
...to".
Are you able to query for just the beginning of the key to return all
users?
If you mean someting like directly querying for all keys which starts with user: there is a keys command for that. This command should be however used only for debugging purpose since it's O(N) because it's sea...
Select data from date range between two dates
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As you can see, there are two ways to get things done:
enlist all acceptable options
exclude all wrong options
Obviously, second way is much more simple (only two cases against four).
Your SQL will look like:
SELECT * FROM Product_sales
WHERE NOT (From_date > @RangeTill OR To_d...
How do you do a simple “chmod +x” from within python?
... non-pythonic answer that may be a little more readable: subprocess.check_call(['chmod', '+x', 'somefile']) and let's you more easily do operations like a+rx.
– Trevor Boyd Smith
Aug 6 at 15:28
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