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How do I find out which DOM element has the focus?
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If you can use jQuery, it now supports :focus, just make sure you are using version 1.6+.
This statement will get you the currently focused element.
$(":focus")
From: How to select an element that has focus on it with jQuery
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How to read a file into a variable in shell?
...n variables.
This affects both expansion and read solutions, and I don't know any good workaround for it.
Example:
printf "a\0b" | od -tx1
S="$(printf "a\0b")"
printf "$S" | od -tx1
Outputs:
0000000 61 00 62
0000003
0000000 61 62
0000002
Ha, our NUL is gone!
Workarounds:
ASCII encode. Se...
How do I list all remote branches in Git 1.7+?
...branch still, but git remote show origin shows that refs/remotes/origin/my-now-dead-branch stale (use 'git remote prune' to remove). Much more useful!
– icc97
Oct 19 '18 at 9:16
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What does mysql error 1025 (HY000): Error on rename of './foo' (errorno: 150) mean?
..._id) REFERENCES
country (id) ON DELETE NO
ACTION ON UPDATE NO ACTION
Now simply issue an:
alter table region drop foreign key
region_ibfk_1;
And finally an:
alter table region drop column
country_id;
And you are good to go!
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How to make an Android device vibrate?
I wrote an Android application. Now, I want to make the device vibrate when a certain action occurs. How can I do this?
13 ...
CSS3 Rotate Animation
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2017: This is now very well supported and a preferred way to do non-infinite rotations. -webkit- prefix is no longer needed and can be safely removed. Browser support: caniuse.com/#search=transforms
– Alph.Dev
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Smooth scrolling when clicking an anchor link
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Update 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(...
Setting up a common nuget packages folder for all solutions when some projects are included in multi
... 3.5.0.1484 with Visual Studio 2015 Update 3
This process is a bit easier now than when I originally tackled this and thought it was time to update this. In general, the process is the same just with less steps. The result is a process that solves or provides the following:
Everything that needs ...
How to filter Pandas dataframe using 'in' and 'not in' like in SQL
...d, but that something is done badly before does not justify doing it badly now.
– ifly6
May 18 '18 at 22:20
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iOS 5 Best Practice (Release/retain?)
...per-file basis. See pixelfreak's answer. So, my advice still stands, but now the 3rd-party libraries shouldn't need to be updated to work with ARC.
Here's what Apple says about opting out of ARC for specific files:
When you migrate a project to use ARC, the -fobjc-arc compiler flag is
set a...