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Fastest way to duplicate an array in JavaScript - slice vs. 'for' loop

...or blink browsers slice() is the fastest method, concat() is a bit slower, and while loop is 2.4x slower. for other browsers while loop is the fastest method, since those browsers don't have internal optimizations for slice and concat. This remains true in Jul 2016. Below are simple scripts that ...
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(HTML) Download a PDF file instead of opening them in browser when clicked

... of downvotes. I assume part of that is that this was answered 4 years ago and as Sarim points out, there is now the HTML 5 download attribute that can handle this. I agree, and think Sarim's answer is good (it probably should be the chosen answer if the OP ever returns). However, this answer is s...
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Why does fatal error “LNK1104: cannot open file 'C:\Program.obj'” occur when I compile a C++ project

... you set the library correctly. Sometimes the lib folder consists of a x86 and a x64 folder. You have to set it to one of those (depending on your compiler) rather than the folder containing both. – M4st3rM1nd Apr 28 '13 at 22:56 ...
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Understanding the Use of ColorMatrix and ColorMatrixColorFilter to Modify a Drawable's Hue

I'm working on a UI for an app, and I'm attempting to use grayscale icons, and allow the user to change the theme to a color of their choosing. To do this, I'm trying to just apply a ColorFilter of some sort to overlay a color on top of the drawable. I've tried using PorterDuff.Mode.MULTIPLY, and it...
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Why does Ruby 1.9.2 remove “.” from LOAD_PATH, and what's the alternative?

... "security" risk. You can get around it by using absolute paths File.expand_path(__FILE__) et al or doing require './filename' (ironically). or by using require_relative 'filename' or adding an "include" directory ruby -I . ... or the same, using irb; $irb -I . ...
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Why does the C preprocessor interpret the word “linux” as the constant “1”?

... In the Old Days (pre-ANSI), predefining symbols such as unix and vax was a way to allow code to detect at compile time what system it was being compiled for. There was no official language standard back then (beyond the reference material at the back of the first edition of K&R), a...
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How to set username and password for SmtpClient object in .NET?

...of the constructor, one uses info from web.config, one specifies the host, and one the host and port. But how do I set the username and password to something different from the web.config? We have the issue where our internal smtp is blocked by some high security clients and we want to use their smt...
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How can I use “:” as an AWK field separator?

Given the following command, 8 Answers 8 ...
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AngularJS - Access to child scope

...e the interpreter will look up the prototype chain starting from the child and continue to the parents until it finds the property, not the other way around. Check Vojta's comments on the issue https://groups.google.com/d/msg/angular/LDNz_TQQiNE/ygYrSvdI0A0J In a nutshell: You cannot access child...
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How to check if a user is logged in (how to properly use user.is_authenticated)?

...ng. I need to check if the current site user is logged in (authenticated), and am trying: 6 Answers ...