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How can I tell when a MySQL table was last updated?
...ENT_TIMESTAMP,
KEY (updated_at)
);
mysql> INSERT INTO foo VALUES (1, NOW() - INTERVAL 3 DAY), (2, NOW());
mysql> SELECT * FROM foo;
+----+------+---------------------+
| id | x | updated_at |
+----+------+---------------------+
| 1 | NULL | 2013-08-18 03:26:28 |
| 2 | NULL | ...
Pointer expressions: *ptr++, *++ptr and ++*ptr
...ment. Similarly p++ is going to evaluate to the current value of p. As we know, the current value of p is the address of 'H'.
So now the p++ part of *p++ has been evaluated; it's the current value of p. Then the * part happens. *(current value of p) means: access the value at the address held by p...
What do “branch”, “tag” and “trunk” mean in Subversion repositories?
...at and why. In many VCS, if you modify a tag, there may not be any way to know.
– David W.
Mar 1 '15 at 19:33
3
...
How do I return the response from an asynchronous call?
...ejected.
Important: You can only use await inside an async function. Right now, top-level await isn't yet supported, so you might have to make an async IIFE (Immediately Invoked Function Expression) to start an async context.
You can read more about async and await on MDN.
Here is an example that bu...
Change Bootstrap input focus blue glow
Does anyone know the how to change Bootstrap's input:focus ? The blue glow that shows up when you click on an input field?
...
What is the most robust way to force a UIView to redraw?
...hy. the subclass in question gets passed the data and it's drawRect method now has everything it needs to render.
5 Answers...
Extending an Object in Javascript
...for brevity, property assignments are skipped because you get the point by now.
Object.assign(darthVader, Robot)
Darth Vader gets the methods of Robot:
darthVader.greet() // inherited from `Person`, outputs "Hi, my name is Darth Vader..."
darthVader.machineGreet() // inherited from `Robot`, outputs...
How to change color of SVG image using CSS (jQuery SVG image replacement)?
... advantage is that it allows you to use CSS to change the color of the SVG now, like so:
svg:hover path {
fill: red;
}
The jQuery code I wrote also ports across the original images ID and classes. So this CSS works too:
#facebook-logo:hover path {
fill: red;
}
Or:
.social-link:hover p...
How can I list ALL DNS records?
...nswer "${3:-any}"
else
dig +nocmd "$1" +noall +answer "${2:-any}"
fi
Now I use dg example.com to get a nice, clean list of DNS records, or dg example.com x to include a bunch of other popular subdomains.
grep -vE "${wild_ips}" filters out records that could be the result of a wildcard DNS ent...
How to change the pop-up position of the jQuery DatePicker control
...
Same issue as the other css-trick: Only works if you now exactly where the datepicker should be in CSS. You cannot use this method to dynamically place the datepicker. I had to use a hack, binding on inst.input.focus()
– aaronbauman
Mar 18...