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Java 8 Distinct by property
...ate about what it's seen previously, and that returns whether the given element was seen for the first time:
public static <T> Predicate<T> distinctByKey(Function<? super T, ?> keyExtractor) {
Set<Object> seen = ConcurrentHashMap.newKeySet();
return t -> seen.add(...
Hidden Features of Xcode 4
Now that Xcode 4 is officially released it's time for a follow up to my previous question: Hidden Features of Xcode
23 Ans...
Playing .mp3 and .wav in Java?
...Java application? I am using Swing. I tried looking on the internet, for something like this example:
14 Answers
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How to check if multiple array keys exists
... exists.
if (array_key_exists("story", $arr) && array_key_exists("message", $arr)) {
// Both keys exist.
}
However this obviously doesn't scale up well to many keys. In that situation a custom function would help.
function array_keys_exists(array $keys, array $arr) {
return !array...
Find in Files: Search all code in Team Foundation Server
... by using the Code Search plugin. marketplace.visualstudio.com/items?itemName=ms.vss-code-search
– deadlydog
Feb 10 '16 at 20:36
...
Can one do a for each loop in java in reverse order?
...
The Collections.reverse method actually returns a new list with the elements of the original list copied into it in reverse order, so this has O(n) performance with regards to the size of the original list.
As a more efficient solution, you could w...
jQuery: How can i create a simple overlay?
..., a div that stays fixed on the screen (no matter if you scroll) and has some sort of opacity.
This will be your CSS for cross browser opacity of 0.5:
#overlay {
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 100%;
background-color: #000;
filter:alpha(opacity=50...
Action Image MVC3 Razor
...place links with images using Razor in MVC3. I simply doing this at the moment:
10 Answers
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Location of my.cnf file on macOS
...
Opening a connection
Selecting the 'Options File' under 'INSTANCE' in the menu.
MySQLWorkbench will search for my.cnf and if it can't find it, it'll create it for you
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Swift: Testing optionals for nil
...ta 5, they no longer let you do:
var xyz : NSString?
if xyz {
// Do something using `xyz`.
}
This produces an error:
does not conform to protocol 'BooleanType.Protocol'
You have to use one of these forms:
if xyz != nil {
// Do something using `xyz`.
}
if let xy = xyz {
// Do som...