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Sort ArrayList of custom Objects by property
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I think the answer best should also include the proper way to do it in Java 8. Collections.sort(list, Comparator.comparing(MyObject::getStartDate)); which reads better and is less error prone. It's very easy to write return o1.getStartDate().co...
How to copy text programmatically in my Android app?
...OARD_SERVICE);
try {
CharSequence text = clipboard.getPrimaryClip().getItemAt(0).getText();
} catch (Exception e) {
return;
}
Notes
Be sure to import the android.content.ClipboardManager version rather than the old android.text.ClipboardManager. Same for ClipData.
If you aren't in an act...
How to change an element's title attribute using jQuery
... working with its properties, not its attributes collection.
The current best practice is to avoid working with attributes unless they are custom or there is no equivalent property to supplement it. Since title does indeed exist as a read/write property on many HTMLElements, we should take advanta...
How can I use modulo operator (%) in JavaScript? [duplicate]
...ft when dividing a value. You can use this to calculate listing lists with items, for example: 10 % 10 gives you 0. When it is 0 you know there a 10 items in a list. For example 20 % 10 gives you the same value, 0, another 10 items in a list......
– Codebeat
Ma...
Convert list to array in Java [duplicate]
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Best thing I came up without Java 8 was:
public static <T> T[] toArray(List<T> list, Class<T> objectClass) {
if (list == null) {
return null;
}
T[] listAsArray = (T[]) Array.newInstanc...
How does a public key verify a signature?
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I personally think this insight is the best one, I've read so far. And definitely see how adding lock instead of key to private/public makes whole system intuitively self-explanatory for regular new comers. While at the moment it is not at all. We are seasoned dev...
Create an empty object in JavaScript with {} or new Object()?
... a lot quicker and, in my experience, more commonly used, so it's probably best to adopt the 'standard' and save some typing.
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How to round up the result of integer division?
...(as Math.Ceiling takes a double):
int nPages = (int)Math.Ceiling((double)nItems / (double)nItemsPerPage);
In java you should do the same with Math.ceil().
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MongoDB Many-to-Many Association
...owing schema:
employee{
//put your contract to employee
contracts:{ item1, item2, item3,...}
}
company{
//and duplicate it in company
contracts:{ item1, item2, item3,...}
}
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im...
Linq: What is the difference between Select and Where
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Where
finds items that match and only returns those that do (filtering).
-> IEnumerable<A> in, IEnumerable<A> out
Select
returns something for all items in the source (projection / transformation). That something might...