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List of awesome stackoverflow questions
https://github.com/dangsonbk/awesome_stackoverflow

List: awesome_stackoverflow

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List of awesome stackoverflow questions

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# The list of awesome Stackoverflow's answers and questions



You can find many of them in [this list](https://stackoverflow.com/questions?sort=votes).

I'm adding more and more. If you like to contribute, feel free to create Pull requests.



- [General problems](#general-problems-algorithm-cs-performance-)

- [Programming languages](#programming-languages)

    - [C/C++](#cc)

    - [Python](#python)

    - [JavaScript](#javascript)

    - [Uncategory](#uncategory)



- [Entertaining](#entertaining)

---



# General problems: Algorithm, CS, Performance ...



- [What and where are the stack and heap?](https://stackoverflow.com/questions/79923/what-and-where-are-the-stack-and-heap)

- [Why is printing “B” dramatically slower than printing “#”?](https://stackoverflow.com/questions/21947452/why-is-printing-b-dramatically-slower-than-printing)

- [Why is my program slow when looping over exactly 8192 elements?](https://stackoverflow.com/questions/12264970/why-is-my-program-slow-when-looping-over-exactly-8192-elements)

- [Why are elementwise additions much faster in separate loops than in a combined loop?](https://stackoverflow.com/questions/8547778/why-are-elementwise-additions-much-faster-in-separate-loops-than-in-a-combined-l)

- [Why is it faster to process a sorted array than an unsorted array?](https://stackoverflow.com/questions/11227809/why-is-it-faster-to-process-a-sorted-array-than-an-unsorted-array) :star2::star2::star2::star2::star2:

- (StackExchange)[Which hashing algorithm is best for uniqueness and speed?](https://softwareengineering.stackexchange.com/questions/49550/which-hashing-algorithm-is-best-for-uniqueness-and-speed)

- (StackExchange)[Which algorithms/data structures should I “recognize” and know by name? [closed]](https://softwareengineering.stackexchange.com/questions/155639/which-algorithms-data-structures-should-i-recognize-and-know-by-name)



# Programming languages



## C/C++



Basic



- [When do you use the “this” keyword?](https://stackoverflow.com/questions/23250/when-do-you-use-the-this-keyword)

- [How do you set, clear, and toggle a single bit?](https://stackoverflow.com/questions/47981/how-do-you-set-clear-and-toggle-a-single-bit)

- [What is the difference between `#include ` and `#include “filename”`?](https://stackoverflow.com/questions/21593/what-is-the-difference-between-include-filename-and-include-filename)

- [In what cases do I use malloc vs new?](https://stackoverflow.com/questions/184537/in-what-cases-do-i-use-malloc-vs-new)

- [How to allocate aligned memory only using the standard library?](https://stackoverflow.com/questions/227897/how-to-allocate-aligned-memory-only-using-the-standard-library)

- [What is meant by Resource Acquisition is Initialization (RAII)?](https://stackoverflow.com/questions/2321511/what-is-meant-by-resource-acquisition-is-initialization-raii)

- [How do I iterate over the words of a string?](https://stackoverflow.com/questions/236129/how-do-i-iterate-over-the-words-of-a-string)

- [Declaring variables inside loops, good practice or bad practice?](https://stackoverflow.com/questions/7959573/declaring-variables-inside-loops-good-practice-or-bad-practice)

- [What does the explicit keyword mean?](https://stackoverflow.com/questions/121162/what-does-the-explicit-keyword-mean)



More Complex



- [Can a local variable's memory be accessed outside its scope?](https://stackoverflow.com/questions/6441218/can-a-local-variables-memory-be-accessed-outside-its-scope)

- [Why should C++ programmers minimize use of 'new'?](https://stackoverflow.com/questions/6500313/why-should-c-programmers-minimize-use-of-new)

- [What does the thread_local mean in C++11?](https://stackoverflow.com/questions/11983875/what-does-the-thread-local-mean-in-c11)

- [What is The Rule of Three?](https://stackoverflow.com/questions/4172722/what-is-the-rule-of-three)



## Python



- [How do I check if a list is empty?](https://stackoverflow.com/questions/53513/how-do-i-check-if-a-list-is-empty) 

- [Checking whether a variable is an integer or not](https://stackoverflow.com/questions/3501382/checking-whether-a-variable-is-an-integer-or-not)

- [Does Python have a ternary conditional operator?](https://stackoverflow.com/questions/394809/does-python-have-a-ternary-conditional-operator)

- [How do I check whether a file exists?](https://stackoverflow.com/questions/82831/how-do-i-check-whether-a-file-exists)

- [What does the `yield` keyword do?](https://stackoverflow.com/questions/231767/what-does-the-yield-keyword-do?rq=1)

- [What is `__init__.py` for?](https://stackoverflow.com/questions/448271/what-is-init-py-for)

- [What does if `__name__ == “__main__”`: do?](https://stackoverflow.com/questions/419163/what-does-if-name-main-do)

- [How to merge two dictionaries in a single expression?](https://stackoverflow.com/questions/38987/how-to-merge-two-dictionaries-in-a-single-expression)

- [Difference between append vs. extend list methods in Python](https://stackoverflow.com/questions/252703/difference-between-append-vs-extend-list-methods-in-python) 

- [What are metaclasses in Python?](https://stackoverflow.com/questions/100003/what-are-metaclasses-in-python)

- [How to clone or copy a list?](https://stackoverflow.com/questions/2612802/how-to-clone-or-copy-a-list)

- [How is set() implemented?](https://stackoverflow.com/questions/3949310/how-is-set-implemented)

- [Python join: why is it string.join(list) instead of list.join(string)](https://stackoverflow.com/questions/493819/python-join-why-is-it-string-joinlist-instead-of-list-joinstring)



## JavaScript



- [What is the !! (not not) operator in JavaScript?](https://stackoverflow.com/questions/784929/what-is-the-not-not-operator-in-javascript)

- [Which equals operator (== vs ===) should be used in JavaScript comparisons?](https://stackoverflow.com/questions/359494/which-equals-operator-vs-should-be-used-in-javascript-comparisons)

- [How do I remove a particular element from an array in JavaScript?](https://stackoverflow.com/questions/5767325/how-do-i-remove-a-particular-element-from-an-array-in-javascript)

- [How do JavaScript closures work?](https://stackoverflow.com/questions/111102/how-do-javascript-closures-work)

- [How to check whether a string contains a substring in JavaScript?](https://stackoverflow.com/questions/1789945/how-to-check-whether-a-string-contains-a-substring-in-javascript)

- [How to replace all occurrences of a string in JavaScript?](https://stackoverflow.com/questions/1144783/how-to-replace-all-occurrences-of-a-string-in-javascript)



## Uncategory

- [How to sleep for five seconds in a batch file/cmd](https://stackoverflow.com/questions/1672338/how-to-sleep-for-five-seconds-in-a-batch-file-cmd)



# Entertaining

- [Why does HTML think “chucknorris” is a color?](https://stackoverflow.com/questions/8318911/why-does-html-think-chucknorris-is-a-color) :muscle:

- [What is the best comment in source code you have ever encountered? [closed]

](https://stackoverflow.com/questions/184618/what-is-the-best-comment-in-source-code-you-have-ever-encountered)

- [Why does `++[[]][+[]]+[+[]]` return the string “10”?](https://stackoverflow.com/questions/7202157/why-does-return-the-string-10)

- [Is it possible to disable the network in iOS Simulator?](https://stackoverflow.com/questions/4808433/is-it-possible-to-disable-the-network-in-ios-simulator) [this answer](https://stackoverflow.com/a/13831212/2964364)

- [What is the “-->” operator in C++?](https://stackoverflow.com/questions/1642028/what-is-the-operator-in-c)

- [GitHub satanically messing with Markdown - changes 666 to DCLXVI](https://stackoverflow.com/questions/44619165/github-satanically-messing-with-markdown-changes-666-to-dclxvi)