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Why rename synthesized properties in iOS with leading underscores? [duplicate]

...ariables had to be instantiated explicitly: @interface Foo : Bar { Baz *_qux; } @property (retain) Baz *qux; @end @implementation Foo @synthesize qux = _qux; - (void)dealloc { [_qux release]; [super dealloc]; } @end People would prefix their instance variables to differentiate them from...
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Constructor overload in TypeScript

... Box(params) { if (params === void 0) { params = {}; } var _a = params.x, x = _a === void 0 ? 0 : _a, _b = params.y, y = _b === void 0 ? 0 : _b, _c = params.height, height = _c === void 0 ? 1 : _c, _d = params.width, width = _d === void 0 ? 1 : _d; this.x = x; this.y ...
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How can I access “static” class variables within class methods in Python?

... Why not just Foo.bar, instead of self.__class__.bar? – mk12 Sep 13 '09 at 20:59 15 ...
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How to test code dependent on environment variables using JUnit?

...erviceImpl { public void doSomeFooStuff() { System.getenv("FOO_VAR_1"); System.getenv("FOO_VAR_2"); System.getenv("FOO_VAR_3"); // Do the other Foo stuff } } You could do the following: package com.foo.service.impl; import static org.mockito.Mockito.when...
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Is it possible to run a single test in MiniTest?

...b -l 25 Yup! Use Nick Quaranto's "m" gem. With it you can say: m spec/my_spec.rb:25 share | improve this answer | follow | ...
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Get bitcoin historical data [closed]

...ocket in higher resolution over longer time period you could use script log_bitstamp_trades.py below. The script uses python websocket-client and pusher_client_python libraries, so install them. #!/usr/bin/python import pusherclient import time import logging import sys import datetime import sig...
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Pretty-print C++ STL containers

...ges: #include <iostream> #include <iterator> #include <type_traits> #include <vector> #include <algorithm> // This works similar to ostream_iterator, but doesn't print a delimiter after the final item template<typename T, typename TChar = char, typename TCharTraits...
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How to send multiple data fields via Ajax? [closed]

...ries[0] = 'ga'; countries[1] = 'cd'; after that you can do like: var new_countries = countries.join(',') after: $.ajax({ type: "POST", url: "Concessions.aspx/GetConcessions", data: new_countries, ... This thing work as JSON string format. ...
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How to redirect 404 errors to a page in ExpressJS?

...low, // this means that Express will attempt // to match & call routes _before_ continuing // on, at which point we assume it's a 404 because // no route has handled the request. app.use(app.router); // Since this is the last non-error-handling // middleware use()d, we assume 404, as nothing e...
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How to join two sets in one line without using “|”

... You can use union method for sets: set.union(other_set) Note that it returns a new set i.e it doesn't modify itself. share | improve this answer | f...