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Scala: Nil vs List()
...List(3, 2, 1)
scala> List(1, 2, 3).foldLeft(Nil)((x, y) => y :: x)
<console>:10: error: type mismatch;
found : List[Int]
required: scala.collection.immutable.Nil.type
List(1, 2, 3).foldLeft(Nil)((x, y) => y :: x)
^
...
ActionLink htmlAttributes
...Link("Edit", "edit", "markets",
new { id = 1 },
new Dictionary<string, object> { { "class", "ui-btn-right" }, { "data-icon", "gear" } });
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Ideal way to cancel an executing AsyncTask
...tually does nothing. Great.
So...
public class MyTask extends AsyncTask<Void, Void, Void> {
private volatile boolean running = true;
private final ProgressDialog progressDialog;
public MyTask(Context ctx) {
progressDialog = gimmeOne(ctx);
progressDialog.setCan...
Extract digits from a string in Java
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Although the regex is supremely simple and clean to look at, it suffers from performance issues and should only be used where you have a one-off strip (like a form submit). If you are processing a lot of data, this is not the ...
How to convert UTF-8 byte[] to string?
...
string result = System.Text.Encoding.UTF8.GetString(byteArray);
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How to use GROUP_CONCAT in a CONCAT in MySQL
... id
See this explained here SQL Fiddle Demo (scroll down as it has two result sets)
Edit There was a mistake in reading question, I had grouped only by id. But two group_contacts are needed if (Values are to be concatenated grouped by Name and id and then over all by id). Previous answer was
selec...
Manipulate a url string by adding GET parameters
...] = 2; // Overwrite if exists
$params['tags'][] = 'cool'; // Allows multiple values
// Note that this will url_encode all values
$url_parts['query'] = http_build_query($params);
// If you have pecl_http
echo http_build_url($url_parts);
// If not
echo $url_parts['scheme'] . '://' . $url_parts...
How to dynamically create CSS class in JavaScript and apply?
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Although I'm not sure why you want to create CSS classes with JavaScript, here is an option:
var style = document.createElement('style');
style.type = 'text/css';
style.innerHTML = '.cssClass { color: #F00; }';
document.getEl...
Why does Python code use len() function instead of a length method?
... is to implement this method on objects which have a length and use the built-in len() function, which calls it for you, similar to the way you would implement __iter__() and use the built-in iter() function (or have the method called behind the scenes for you) on objects which are iterable.
See Em...
How to change line width in IntelliJ (from 120 character)
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IntelliJ IDEA 2016.2.1 Ultimate on Windows is the same.
– Do Nhu Vy
Aug 25 '16 at 6:36
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