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Java Singleton and Synchronization
... case where you have two threads that call getInstance() at the same time. Now imagine T1 executes just past the instance == null check, and then T2 runs. At this point in time the instance is not created or set, so T2 will pass the check and create the instance. Now imagine that execution switches ...
Ignore files that have already been committed to a Git repository [duplicate]
...m your system use: git rm --cached filename
To untrack every file that is now in your .gitignore:
First commit any outstanding code changes, and then, run this command:
git rm -r --cached .
This removes any changed files from the index(staging area), then just run:
git add .
Commit it:
g...
Latest jQuery version on Google's CDN
...
UPDATE 7/3/2014: As of now, jquery-latest.js is no longer being updated.
From the jQuery blog:
We know that http://code.jquery.com/jquery-latest.js is abused
because of the CDN statistics
showing it’s the most popular file. That wouldn...
Styles.Render in MVC4
...
One thing to know is that it will not add a .css file that is already minimized to the bundle. Example: it does not work with bootstrap.min.js, only with bootstrap.js. I hope this can help others.
– codea
...
Java Date vs Calendar
... as java.util.Date, java.util.Calendar, and java.text.SimpleDateFormat are now legacy, supplanted by the java.time classes built into Java 8 and later. See Tutorial by Oracle.
– Basil Bourque
Oct 19 '18 at 19:51
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What are the implications of using “!important” in CSS? [duplicate]
...
}
button.highlight {
color: blue;
font-size: 1.5em;
}
button#buyNow {
color: green;
font-size: 2em;
}
On this page, all buttons are black. Except the buttons with the class "highlight", which are blue. Except that one unique button with the ID "buyNow", which is green. The impo...
Find the closest ancestor element that has a specific class
...
Update: Now supported in most major browsers
document.querySelector("p").closest(".near.ancestor")
Note that this can match selectors, not just classes
https://developer.mozilla.org/en-US/docs/Web/API/Element.closest
For legac...
How to detect responsive breakpoints of Twitter Bootstrap 3 using JavaScript?
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Edit: This library is now available through Bower and NPM. See github repo for details.
UPDATED ANSWER:
Live example: CodePen
Latest version: Github repository
Don't like Bootstrap? Check: Foundation demo and Custom framework demos
Have a probl...
Autowiring two beans implementing same interface - how to set default bean to autowire?
... I forgot to mention in the question that I'm using Spring 2.5 (I have now edited the question) so @Primary is not an option.
– simon
May 10 '12 at 12:39
1
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Avoid modal dismiss on enter keypress
...n to be fired. I changed it to an anchor instead and it works as expected now (enter submits the form and does not close the modal).
<a class="close" data-dismiss="modal">&times;</a>
Without seeing your source, I can't confirm that your cause is the same though.
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