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Converting JSON data to Java object
... "}]"
+ "}";
// Now do the magic.
Data data = new Gson().fromJson(json, Data.class);
// Show it.
System.out.println(data);
}
}
class Data {
private String title;
private Long id;
private Boolean children;
private List<Data> gr...
Java: Best way to iterate through a Collection (here ArrayList)
...
I didn't say that those wouldn't work, but if by any chance a certain improvements or performance changes are done for the implementations of collections, then it would automatically apply for your code and you don't need to wri...
Configure apache to listen on port other than 80
...onf open with a code editor or wordpad, but not notepad - it does not read new lines properly) and replace the number on the line that starts with Listen with the number of the port you want, save it and repeat step 6. If it is the one you wanted to use, then continue:
Check the PID of the process t...
How to return a file using Web API?
...romID(id, out fileName, out fileSize);
HttpResponseMessage response = new HttpResponseMessage(HttpStatusCode.OK);
response.Content = new StreamContent(new FileStream(localFilePath, FileMode.Open, FileAccess.Read));
response.Content.Headers.ContentDisposition = new System.Net.Http.Header...
Checking if a key exists in a JS object
...
Use the in operator:
testArray = 'key1' in obj;
Sidenote: What you got there, is actually no jQuery object, but just a plain JavaScript Object.
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“The page you are requesting cannot be served because of the extension configuration.” error message
...ters, so web.configs happened to be the same in both sites.
However, the newly installed site worked fine, while the old one didn't. Then I opened 2 IIS Manager windows and started comparing the difference in web site settings. And I found a problem.
Somebody deleted all the Handler Mappings wit...
Sort an array in Java
...are also very useful to learn about, esp When using arrays,
int[] array = new int[10];
Random rand = new Random();
for (int i = 0; i < array.length; i++)
array[i] = rand.nextInt(100) + 1;
Arrays.sort(array);
System.out.println(Arrays.toString(array));
// in reverse order
for (int i = array.l...
Why is SSE scalar sqrt(x) slower than rsqrt(x) * x?
...uction sequence (reciprocal square-root approximation followed by a single Newton-Raphson step) that gives nearly full precision (~23 bits of accuracy, if I remember properly), and is still somewhat faster than sqrtss.
edit: If speed is critical, and you're really calling this in a loop for many va...
How to easily initialize a list of Tuples?
...
c# 7.0 lets you do this:
var tupleList = new List<(int, string)>
{
(1, "cow"),
(5, "chickens"),
(1, "airplane")
};
If you don't need a List, but just an array, you can do:
var tupleList = new(int, string)[]
{
(1, "cow"),
...
How to get the command line args passed to a running process on unix/linux systems?
...
There are several options:
ps -fp <pid>
cat /proc/<pid>/cmdline | sed -e "s/\x00/ /g"; echo
There is more info in /proc/<pid> on Linux, just have a look.
On other Unixes things might be different. The ps command will work everywhere, the /proc...