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Check if a value is an object in JavaScript
...e prototype property of a user-defined function: this is not Cs prototype
new C() -- "new"-ing a user-defined function
Math
Array.prototype
arrays
{"a": 1, "b": 2} -- objects created using literal notation
new Number(3) -- wrappers around primitives
... many other things ...
Object.create(nu...
How do I exchange keys with values in a dictionary?
...
new_dict = dict(zip(my_dict.values(), my_dict.keys()))
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How to listen for changes to a MongoDB collection?
... Wage)
Ruby
coll = db.collection('my_collection')
cursor = Mongo::Cursor.new(coll, :tailable => true)
loop do
if doc = cursor.next_document
puts doc
else
sleep 1
end
end
PHP
$mongo = new Mongo();
$db = $mongo->selectDB('my_db')
$coll = $db->selectCollection('my_collection...
How to get object size in memory? [duplicate]
...may not be accurate but its close enough for me
long size = 0;
object o = new object();
using (Stream s = new MemoryStream()) {
BinaryFormatter formatter = new BinaryFormatter();
formatter.Serialize(s, o);
size = s.Length;
}
...
How do I import other TypeScript files?
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import { ZipCodeValidator } from "./ZipCodeValidator";
let myValidator = new ZipCodeValidator();
https://www.typescriptlang.org/docs/handbook/modules.html
Old answer: From TypeScript version 1.5 you can use tsconfig.json: http://www.typescriptlang.org/docs/handbook/tsconfig-json.html
It comple...
How can I check if a key exists in a dictionary? [duplicate]
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deprecated applies to all new code. once it's deprecated, don't use it anymore.
– aaronasterling
Oct 2 '10 at 12:40
5
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How do you get assembler output from C/C++ source in gcc?
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answered Sep 26 '08 at 2:51
PhirePhlyPhirePhly
2,55611 gold badge1515 silver badges1212 bronze badges
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When someone writes a new programming language, what do they write it IN?
...plemented in C. Then the first version of the language is used to create a new version, and so on. (Like Haskell.)
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MySQL Select all columns from one table and some from another table
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Please don't answer unless you are adding something new. (Especially 8 year old questions with very highly upvoted/adequate answers.)
– philipxy
Oct 25 '18 at 0:27
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