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Should I instantiate instance variables on declaration or in the constructor?
...he compiler.
The first variant is more readable.
You can't have exception handling with the first variant.
There is additionally the initialization block, which is as well put in the constructor(s) by the compiler:
{
a = new A();
}
Check Sun's explanation and advice
From this tutorial:
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Sort JavaScript object by key
...swers to this question are outdated, never matched implementation reality, and have officially become incorrect now that the ES6/ES2015 spec has been published.
See the section on property iteration order in Exploring ES6 by Axel Rauschmayer:
All methods that iterate over property keys do so ...
Quickest way to compare two generic lists for differences
What is the quickest (and least resource intensive) to compare two massive (>50.000 items) and as a result have two lists like the ones below:
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Determine the line of code that causes a segmentation fault?
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Use bt as a shorthand for backtrace.
– rustyx
May 27 '19 at 7:53
add a comment
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lodash multi-column sortBy descending
...['type','name'], [true, false]);
Since version 3.10.0 you can even use standard semantics for ordering (asc, desc):
var data = _.sortByOrder(array_of_objects, ['type','name'], ['asc', 'desc']);
In version 4 of lodash this method has been renamed orderBy:
var data = _.orderBy(array_of_objects, ...
Array.push() if does not exist?
...two arguments, this would simplify the case when the added value is inline and not in a variable you can access in your function. array.pushIfNotExist({ name: "tom", text: "tasty" }, function(a,b){ return a.name === b.name && a.text === b.text; });
– Vincent Robert
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cannot load such file — zlib even after using rvm pkg install zlib
I installed zlib package and ruby 1.9.3 using rvm, but whenever I try to install
gems it says
cannot load such file -- zlib
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Running the new Intel emulator for Android
Lately Google and Intel have published a new way to run the emulator, which should work much better than the previous version (which has emulated ARM CPU). Here are some links about it: this and this .
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Can jQuery get all CSS styles associated with an element?
Is there a way in jQuery to get all CSS from an existing element and apply it to another without listing them all?
5 Answer...
close vs shutdown socket?
...nderstood that if we close a socket, it means the socket will be destroyed and can be re-used later.
9 Answers
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