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What is the difference between Builder Design pattern and Factory Design pattern?
...ution that works for all cases. It depends on what you need to implement.
From Wikipedia:
Builder focuses on constructing a
complex object step by step. Abstract
Factory emphasizes a family of product
objects (either simple or complex).
Builder returns the product as a final
step,...
Items in JSON object are out of order using “json.dumps”?
...d a particular order; you could use collections.OrderedDict:
>>> from collections import OrderedDict
>>> json.dumps(OrderedDict([("a", 1), ("b", 2)]))
'{"a": 1, "b": 2}'
>>> json.dumps(OrderedDict([("b", 2), ("a", 1)]))
'{"b": 2, "a": 1}'
Since Python 3.6, the keyword a...
How to create correct JSONArray in Java using JSONObject
...
I suppose you're getting this JSON from a server or a file, and you want to create a JSONArray object out of it.
String strJSON = ""; // your string goes here
JSONArray jArray = (JSONArray) new JSONTokener(strJSON).nextValue();
// once you get the array, you ...
TypeScript and field initializers
... aboutMe() {
return `Hi, I'm ${this.name}, aged ${this.age} and from ${this.address}`;
}
}
// typescript field initializer (maintains "type" definition)
const john = Object.assign( new Person(), {
name: "John",
age: 29,
address: "Earth"
});
// initialized obje...
How to center an element horizontally and vertically
...div>
</section>
Approach 4 - Absolutely positioned 50% from the top with displacement:
Example Here / Full Screen Example
This approach assumes that the text has a known height - in this instance, 18px. Just absolutely position the element 50% from the top, relative to the pare...
How to add multiple font files for the same font?
... Google fonts I would suggest the following.
If you want the fonts to run from your localhost or server you need to download the files.
Instead of downloading the ttf packages in the download links, use the live link they provide, for example:
http://fonts.googleapis.com/css?family=Source+Sans+Pr...
How can I generate Unix timestamps?
...ime value is rather less easy. Logically, you use the strptime() function from POSIX. However, the Perl POSIX::strptime module (which is separate from the POSIX module) has the signature:
($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) =
POSIX::strptime...
What does '
...ach($tokens as $token){
echo token_name((int) $token[0]), PHP_EOL;
}
From the List of Parser Tokens, here is what T_OPEN_TAG_WITH_ECHO links to.
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Difference between object and class in Scala
...or every object in the code, an anonymous class is created, which inherits from whatever classes you declared object to implement. This class cannot be seen from Scala source code -- though you can get at it through reflection.
There is a relationship between object and class. An object is said to ...
Breaking out of a nested loop
... loop is perfectyly ok. Besides, note that all break, continue and return, from structural programming point of view, are hardly better than goto - basically they're the same thing, just in nicer packaging. That's why pure structural languages (such as original Pascal) lack all of three.
...