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Zip lists in Python

...x. list, string, tuple, dictionary) Output (list) 1st tuple = (element_1 of numbers, element_1 of letters) 2nd tuple = (e_2 numbers, e_2 letters) … n-th tuple = (e_n numbers, e_n letters) List of n tuples: n is the length of the shortest argument (input) len(numbers) =...
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Python Dictionary Comprehension

...a subclass of dict which works somewhat like a defaultdict if you override __missing__: >>> class KeyDict(dict): ... def __missing__(self, key): ... #self[key] = key # Maybe add this also? ... return key ... >>> d = KeyDict() >>> d[1] 1 >>> d[2] ...
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Iterating each character in a string using Python

...imply implement an iterator that defines a next() method, and implement an __iter__ method on a class to make it iterable. (the __iter__ of course, should return an iterator object, that is, an object that defines next()) See official documentation ...
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Disable Visual Studio code formatting in Razor

...& Formatting https://www.jetbrains.com/help/resharper/2016.1/Reference__Options__Languages__Razor__Editor.html share | improve this answer | follow | ...
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Can PostgreSQL index array columns?

...0}'); INSERT INTO "Test" VALUES ('{10, 20, 30}'); CREATE INDEX idx_test on "Test" USING GIN ("Column1"); -- To enforce index usage because we have only 2 records for this test... SET enable_seqscan TO off; EXPLAIN ANALYZE SELECT * FROM "Test" WHERE "Column1" @> ARRAY[2...
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How to disable HTML button using JavaScript?

...n purposes // don't ever actually use document.write(), eval(), or access __proto__ function log(value) { document.write(`<pre>${value}</pre>`); } function logChain(code) { log(code); var object = eval(code); do { log(`${object.constructor.name} ${object instan...
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jQuery get value of selected radio button

... Just use. $('input[name="name_of_your_radiobutton"]:checked').val(); So easy it is. share | improve this answer | follow ...
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How to properly reuse connection to Mongodb across NodeJs application and modules

...re( 'mongodb' ).MongoClient; const url = "mongodb://localhost:27017"; var _db; module.exports = { connectToServer: function( callback ) { MongoClient.connect( url, { useNewUrlParser: true }, function( err, client ) { _db = client.db('test_db'); return callback( err ); } );...
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Attach parameter to button.addTarget action in Swift

...tton.addTarget(self, action: #selector(YourViewController.webButtonTouched(_:)), for:.touchUpInside) webButton.params["myvalue"] = "bob" then finally catch it all here @IBAction func webButtonTouched(_ sender: PassableUIButton) { print(sender.params["myvalue"] ?? "") } You do this one time ...
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Keyboard Interrupts with python's multiprocessing Pool

...s to specify a timeout. To do that, replace results = pool.map(slowly_square, range(40)) with results = pool.map_async(slowly_square, range(40)).get(9999999) or similar. share | impro...