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Floating elements within a div, floats outside of div. Why?
...#parent { float: left; width: 100% }
Another way uses a clear element:
<div class="parent">
<img class="floated_child" src="..." />
<span class="clear"></span>
</div>
CSS
span.clear { clear: left; display: block; }
...
How to check if element has any children in Javascript?
...
A reusable isEmpty( <selector> ) function.
You can also run it toward a collection of elements (see example)
const isEmpty = sel =>
![... document.querySelectorAll(sel)].some(el => el.innerHTML.trim() !== "");
console.log...
What new capabilities do user-defined literals add to C++?
...e to using user-defined literals instead of a constructor call:
#include <bitset>
#include <iostream>
template<char... Bits>
struct checkbits
{
static const bool valid = false;
};
template<char High, char... Bits>
struct checkbits<High, Bits...>
{
s...
How do I get the list of keys in a Dictionary?
...
List<string> keyList = new List<string>(this.yourDictionary.Keys);
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What replaces cellpadding, cellspacing, valign, and align in HTML5 tables?
...
This should solve your problem:
td {
/* <http://www.w3.org/wiki/CSS/Properties/text-align>
* left, right, center, justify, inherit
*/
text-align: center;
/* <http://www.w3.org/wiki/CSS/Properties/vertical-align>
* baseline, sub, su...
Android: allow portrait and landscape for tablets, but force portrait on phone?
... res/values as bools.xml or whatever (file names don't matter here):
<?xml version="1.0" encoding="utf-8"?>
<resources>
<bool name="portrait_only">true</bool>
</resources>
Put this one in res/values-sw600dp and res/values-xlarge:
<?xml ver...
How to permanently remove few commits from remote branch
...working tree, like a git reset --hard would.
The documentation adds:
-C <new-branch>
--force-create <new-branch>
Similar to --create except that if <new-branch> already exists, it will be reset to <start-point>.
This is a convenient shortcut for:
$ git branch -f &l...
How to set custom header in Volley Request
...
It looks like you override public Map<String, String> getHeaders(), defined in Request, to return your desired HTTP headers.
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Using margin:auto to vertically-align a div
...
Update Aug 2020
Although the below is still worth reading for the useful info, we have had Flexbox for some time now, so just use that, as per this answer.
You can't use:
vertical-align:middle because it's not applicable to block-level eleme...
Testing if object is of generic type in C#
...ist.GetType().IsGenericType;
If you want to check if it's a generic List<T>:
return list.GetType().GetGenericTypeDefinition() == typeof(List<>);
As Jon points out, this checks the exact type equivalence. Returning false doesn't necessarily mean list is List<T> returns false (i...