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How to link Docker services across hosts?
...nter-host connectivity. This shortcoming is clearly stated by Docker's own demo youtube.com/watch?v=M4PFY6RZQHQ&t=3m37s
– Bruno Bronosky
Mar 25 '15 at 0:52
1
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Best way to center a on a page vertically and horizontally? [duplicate]
...
The best and most flexible way
My demo on dabblet.com
The main trick in this demo is that in the normal flow of elements going from top to bottom, so the margin-top: auto is set to zero. However, an absolutely positioned element acts the same for distributio...
How do I pre-populate a jQuery Datepicker textbox with today's date?
...).datepicker({
dateFormat: "yy-mm-dd"
}).datepicker("setDate", "0");
Demo
As mentioned in documentation, setDate() happily accepts the JavaScript Date object, number or a string:
The new date may be a Date object or a string in the current date
format (e.g. '01/26/2009'), a number of da...
How to get the last char of a string in PHP?
...es, you can access the last character in the string like this:
$str[-1]
DEMO
At the request of a @mickmackusa, I supplement my answer with possible ways of application:
<?php
$str='abcdef';
var_dump($str[-2]); // => string(1) "e"
$str[-3]='.';
var_dump($str); // => string(6) "abc...
How to hide columns in HTML table?
...N (be it a th or td) is always the Nth child element of its row.
Here's a demo.
If you want the column number to be dynamic, you could do that using querySelectorAll or any framework presenting similar functionality, like jQuery here:
$('#myTable tr > *:nth-child(2)').hide();
Demo with...
How do I 'overwrite', rather than 'merge', a branch on another branch in Git?
...strategy.
You can find the resulting history in the plumbing branch of the demo repository
Not very readable and not as easy to remember compared to the -s ours switch, but it does the job. The resulting tree is again the same as branch B:
$ git rev-parse A^{tree} B^{tree} HEAD^{tree}
3859ea064e85b2...
Concatenate two slices in Go
...unction alters a member, the change will be seen on the original. Here's a demo. So the only real overhead will be that it creates a new slice if you didn't have one already, like: foo(1, 2, 3, 4, 5) which will create a new slice that is will hold.
– user1106925
...
Auto expand a textarea using jQuery
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Grows / Shrinks textarea. This demo utilizes jQuery for event binding, but it's not a must in any way. (no IE support - IE doesn't respond to rows attribute change)
DEMO PAGE
HTML
<textarea class='autoExpand' rows='3' data-min-rows='3' placeholder=...
Accessing class variables from a list comprehension in the class definition
...ere -- differences between list comprehension and generator expressions. A demo that I played around with:
class Foo:
# A class-level variable.
X = 10
# I can use that variable to define another class-level variable.
Y = sum((X, X))
# Works in Python 2, but not 3.
# In Py...
How to make an element width: 100% minus padding?
...way to fix it:
This will work in all modern browsers, and IE8+.
Here's a demo: http://jsfiddle.net/thirtydot/QkmSk/301/
.content {
width: 100%;
box-sizing: border-box;
}
The browser prefixed versions (-webkit-box-sizing, etc.) are not needed in modern browsers.
...