Stack Overflow Weekly Newsletter - Tuesday, July 29, 2014

Top new questions this week: How does a language expand itself? I am learning C++ and I've just started learning about some of Qt's capabilities to code GUI programs. And I asked myself the following question: How does C++, which previously had no syntax capable … c++ libraries bootstrapping   asked by Med Larbi Sentissi 62 votes answered by Joachim Pileborg 58 votes Will Java Final variables have default values? I have a program like this: class Test { final int x; { printX(); } Test() { System.out.println("const called"); } void printX() { … java final   asked by user3766874 45 votes answered by sp00m 27 votes Is (x - x) always positive zero for doubles, or sometimes negative zero? When x is a double, is (x - x) guaranteed to be +0.0, or might it sometimes be -0.0 (depending on the sign of x)? java floating-point   asked by jtbandes 44 votes answered by Pascal Cuoq 39 votes How does Bluebird's util.toFastProperties function make an object's properties "fast"? In Bluebird's util.js file, it has the following function: function toFastProperties(obj) { /*jshint -W027*/ function f() {} f.prototype = obj; ASSERT("%HasFastProperties", true, … javascript promise bluebird   asked by Qantas 94 Heavy 36 votes answered by Benjamin Gruenbaum 57 votes Performance issue: Java vs C++ I have always heard that C++ was way more efficient than Java (and that is why most games are developped in C++). I wrote a small algorithm to solve the "Eight queens puzzle" in both Java and C++, … java c++ performance algorithm   asked by realUser404 29 votes answered by Brian 48 votes Why is a constructor necessary in a const member struct? I have a code similar to this: class AClass { public: struct AStruct { }; AClass(){} private: const AStruct m_struct; }; int main() { AClass a; } It throws this compilation error (with … c++ c++11   asked by ChronoTrigger 27 votes answered by chris 20 votes What does the -> <- operator do? I recently came upon the following code: IntPredicate neg = x -> x <- x; What is this, some sort of reverse double lambda? java syntax lambda obfuscation java-8   asked by FredOverflow 25 votes answered by tobias_k 42 votes Greatest hits from previous weeks: $(this) selector and children? I have a layout similar to this <div id="..."><img src="..."></div> I would like to use a jQuery selector to select the child img inside of the div on click To get the div, I've … jquery jquery-selectors this   asked by Alex 1193 votes answered by Simon 1792 votes What are the differences between 'git pull' and 'git fetch'? What are the differences between git pull and git fetch? git git-pull git-fetch   asked by Pablo 3191 votes answered by Greg Hewgill 2843 votes Can you answer these? Using SSLSetEnabledCiphers with AFNetworking to disable weak ciphers I am trying to disable some ciphers (weak) such as single DES, single DES 40 bit etc. I've tried using this bit of code from How does one set SSL ciphers when using CFSocket/CFStream in Cocoa? and … ios iphone ssl afnetworking cfnetwork   asked by ManicMonkOnMac 5 votes Angular + .nghaml template: Referencing Precompiled Image Assets I'm using .nghaml for my templates and using the following gems for Angular integration: gem 'angularjs-rails' gem 'angular-rails-templates' My Rail view layouts are name.html.haml and using … ruby-on-rails angularjs   asked by Morgan 4 votes Bug in scikit-learns LDA function - plots shows non-zero correlation I did some LDA using scikit-learn's LDA function and I noticed in my resulting plots that there is a non-zero correlation between LDs. from sklearn.lda import LDA sklearn_lda = LDA(n_components=2) … python r data scikit-learn lda   asked by Sebastian Raschka 6 votes

Subscribe to more Stack Exchange newsletters Unsubscribe from this newsletter or change your email preferences by visiting your subscriptions page on stackexchange.com. Questions? Comments? Let us know on our feedback site. If you no longer want to receive mail from Stack Exchange, unsubscribe from all stackexchange.com emails. Stack Exchange, Inc. 110 William St, 28th Floor, NY NY 10038 <3