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What are “first class” objects?
...r something else said to be "first class" in a given programming language, and why? In what do they differ from languages where they are not?
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Is ASCII code 7-bit or 8-bit?
...as a 7-bit code. This was done well before 8-bit bytes became ubiquitous, and even into the 1990s you could find software that assumed it could use the 8th bit of each byte of text for its own purposes ("not 8-bit clean"). Nowadays people think of it as an 8-bit coding in which bytes 0x80 through ...
#pragma once vs include guards? [duplicate]
I'm working on a codebase that is known to only run on windows and be compiled under Visual Studio (it integrates tightly with excel so it's not going anywhere). I'm wondering if I should go with the traditional include guards or use #pragma once for our code. I would think letting the compiler de...
Python != operation vs “is not”
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== is an equality test. It checks whether the right hand side and the left hand side are equal objects (according to their __eq__ or __cmp__ methods.)
is is an identity test. It checks whether the right hand side and the left hand side are the very same object. No methodcalls ...
Drawing Isometric game worlds
...echnique for mapping the tiles to the screen can be said that the tile's x and y coordinates are on the vertical and horizontal axes.
"Drawing in a diamond" approach:
By drawing an isometric map using "drawing in a diamond", which I believe refers to just rendering the map by using a nested for-lo...
Which way is best for creating an object in JavaScript? Is `var` necessary before an object property
...creating an object in JavaScript. Which way is best for creating an object and why?
8 Answers
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What is the motivation for bringing Symbols to ES6?
...less; we could easily use plain strings instead, like we do in JavaScript. And now they decide to complicate things in JS with that.
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What breaking changes are introduced in C++11?
...to stop compiling: the introduction of explicit operator bool() in the standard library, replacing old instances of operator void*() . Granted, the code that this will break is probably code that should not have been valid in the first place, but it's still a breaking change nonetheless: programs...
Static variables in member functions
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Since class A is a non-template class and A::foo() is a non-template function. There will be only one copy of static int i inside the program.
Any instance of A object will affect the same i and lifetime of i will remain through out the program. To add an exampl...
Why does the MongoDB Java driver use a random number generator in a conditional?
...he following code in this commit for MongoDB's Java Connection driver , and it appears at first to be a joke of some sort. What does the following code do?
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