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How to override to_json in Rails?

...e creation of the json should be separate from the rendering of the json. Now, anytime to_json is called on an object, as_json is invoked to create the data structure, and then that hash is encoded as a JSON string using ActiveSupport::json.encode. This happens for all types: object, numeric, date,...
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How expensive is the lock statement?

...th locks. Added ints is one of many. Love the suggestion, will use it from now on. – Kees C. Bakker Apr 21 '11 at 6:02 ...
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Can I find out the return value before returning while debugging in Intellij?

...ere is a much better way. See answer from Birchlabs for details. It should now be the accepted answer. – Mikezx6r Nov 4 '19 at 13:15 add a comment  |  ...
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map function for objects (instead of arrays)

...ll and an extra library just for one function. In any case, this answer is now outdated and you can simply call Object.entries({a: 1, b: 2, c: 3}) to get an array. – user6269864 Oct 3 '17 at 7:49 ...
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How to iterate over associative arrays in Bash

... This is now if assign all keys to an array: array=(${!hash[@]}) – Michael-O Jun 6 '13 at 10:54 12 ...
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What does the property “Nonatomic” mean?

...fault (which is atomic; there used to be no keyword for this, but there is now), then the @synthesized methods use an object-level lock to ensure that multiple reads/writes to a single property are serialized. As the Apple docs point out, this doesn't mean the whole object is thread-safe, but the in...
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HTTP URL Address Encoding in Java

... @Carlos Thx for the edit. Now it does escape but not correct escaping. It should be adding a % to the HEX value of char for Path params meaning é char should be converted to %e9 – fmucar Jan 19 '11 at 13:37 ...
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Difference: std::runtime_error vs std::exception()

... @rubenvb I did not know about that, but I think it will clearify the code for future maintenance if only objects of classes derived from exception are thrown. Example: I like to find out what custom exceptions are implemented in my code base and...
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Javascript: Extend a Function

...ion properties and method. this.prototype = parent return this } Now you can use Child function as follows, let childObject = Child("Secret Message") console.log(childObject.getMessage()) // logs "Message is Secret Message" console.log(childObject.getProps()) // logs "Secret Mes...
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Fastest way to copy file in node.js

...perations with the file system (copying/reading/writing etc). I'd like to know which methods are the fastest, and I'd be happy to get an advice. Thanks. ...