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The Guava library: What are its most useful and/or hidden features? [closed]
I have had a quick scan of the Guava API and the new collection types it provides( Multimap and BiMap for example appear useful) and I am thinking of including the library in the project(s) I work on.
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Margin on child element moves parent element
...rent { overflow: hidden; }
This prevents the margins to collapse. Border and padding do the same.
Hence, you can also use the following to prevent a top-margin collapse:
.parent {
padding-top: 1px;
margin-top: -1px;
}
Update by popular request:
The whole point of collapsing margins is...
python list by value not by reference [duplicate]
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what is the difference between a regular copy and a deep copy? Why does what happens above happen? I think I have a general understanding, it seems to be like the same problem encountered by the op at the second layer. How does it work internally?
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appearanceWhenContainedIn in Swift
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UIBarButtonItem is not an UIView and needs to be extended separately
– Sergey Skoblikov
Apr 4 '15 at 9:59
7
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How to do something before on submit? [closed]
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Got any code to look at? Not sure I understand the problem.
– Dan Breen
Jun 3 '13 at 13:51
3
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How to set background color of HTML element using css properties in JavaScript
...nd your code is more maintainable if you keep all your styles, etc. in CSS and just set / unset class names in JavaScript.
Your CSS would obviously be something like:
.highlight {
background:#ff00aa;
}
Then in JavaScript:
element.className = element.className === 'highlight' ? '' : 'highlig...
How can I display a pdf document into a Webview?
..., until now if you want to read PDF, you must install a PDF reader on your Android phone, or use webview to render PDF file online. Sorry but we cannot use the second method to read PDF offline.
– anticafe
Jun 6 '11 at 10:23
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Easy way to prevent Heroku idling?
... or less the same solution as Jesse but maybe more integrated to Heroku... And with a few perks (performance monitoring is just great).
Note: to all those saying it doesn't work: the important part in my answer is "availability monitor". Just installing the addon won't help. You also need to s...
Convert XML to JSON (and back) using Javascript
How would you convert from XML to JSON and then back to XML?
12 Answers
12
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How to get distinct values from an array of objects in JavaScript?
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If this were PHP I'd build an array with the keys and take array_keys at the end, but JS has no such luxury. Instead, try this:
var flags = [], output = [], l = array.length, i;
for( i=0; i<l; i++) {
if( flags[array[i].age]) continue;
flags[array[i].age] = true;
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