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Generate JSON string from NSDictionary in iOS
I have a dictionary I need to generate a JSON string by using dictionary . Is it possible to convert it? Can you guys please help on this?
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Declaring abstract method in TypeScript
... officially live.
abstract class Animal {
constructor(protected name: string) { }
abstract makeSound(input : string) : string;
move(meters) {
alert(this.name + " moved " + meters + "m.");
}
}
class Snake extends Animal {
constructor(name: string) { super(name); }
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Confused about __str__ on list in Python [duplicate]
...round, I understand that __str__ is something like a Python version of toString (while I do realize that Python is the older language).
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Difference between and text
...ather tricky what is received on server side. Instead, if you must send an extra value, use a hidden field.
Button with <input>
As with:
<input type="button" />
By default, this does next to nothing. It will not even submit your form. You can only place text on the button and give i...
Get value of a string after last slash in JavaScript
...the series of characters not containing a slash" ([^/]*) at the end of the string ($). Then it grabs the matched characters from the returned match object by indexing into it ([0]); in a match object, the first entry is the whole matched string. No need for capture groups.
Live example
Using lastI...
Render partial from different folder (not shared)
...public class NewViewEngine : RazorViewEngine {
private static readonly string[] NEW_PARTIAL_VIEW_FORMATS = new[] {
"~/Views/Foo/{0}.cshtml",
"~/Views/Shared/Bar/{0}.cshtml"
};
public NewViewEngine() {
// Keep existing locations in sync
base.PartialViewLocationForma...
Python list iterator behavior and next(iterator)
...; for i in a:
... print(i)
... _ = next(a)
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or print extra information to differentiate the print() output from the interactive interpreter echo:
>>> a = iter(list(range(10)))
>>> for i in a:
... print('Printing: {}'.format(i))
... next(a)
...
Printing...
How to parse JSON in Scala using standard Scala classes?
...pply(a:Any):Option[T] = Some(a.asInstanceOf[T]) }
object M extends CC[Map[String, Any]]
object L extends CC[List[Any]]
object S extends CC[String]
object D extends CC[Double]
object B extends CC[Boolean]
val jsonString =
"""
{
"languages": [{
"name": "English",
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How to check an Android device is HDPI screen or MDPI screen?
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As of 2018, you can use the below method -
public static String getDeviceDensityString(Context context) {
switch (context.getResources().getDisplayMetrics().densityDpi) {
case DisplayMetrics.DENSITY_LOW:
return "ldpi";
case DisplayMetrics.DENSITY_MED...
How to convert an image to base64 encoding?
...nd get result to prepare str as data:" . file_mime_type . " base64_encoded string. Use it in img src attribute. see following code can I help for you.
// A few settings
$img_file = 'raju.jpg';
// Read image path, convert to base64 encoding
$imgData = base64_encode(file_get_contents($img_file));
/...