It depends on the environment you're using. I have the desktop version of Dyalog, which has keyboard shortcuts for the symbols. For example, `[ makes ←, the assignment operator.
Most environments also have a point-and-click menu for the symbols.
Integer math can generate amazing patterns when laid out over a grid. Even the most basic functions can yield stunningly elaborate designs!
Your challenge
Write 3 Tweetable (meaning 140 characters or less) function bodies for the red, green, and blue values for a 1024x1024 image.
The input to ...
shortest quine I can do in JS that doesn't indirectly read its own source code is this ((x,a=String.fromCharCode(39))=>console.log(x+a+x+a+")"))('((x,a=String.fromCharCode(39))=>console.log(x+a+x+a+")"))(')
Anyone want to attempt this challenge my friend sent me: Make a program that will calculate how long it will take a computer to calculate how long it will take it to calculate (by hand) time passed to read the source code character by character.
Goal
Sometimes dinner menus can have long winded names. It's much easier for the waiter to write an abbreviation that unambiguously identifies the dish.
For example, given this list:
beef burger
chicken burger
chicken nuggets
The abbreviation c n matches chicken nuggets.
The abbreviation bu...
@DankMemes So far, I knew the C approach (no actual Booleans, non-zero integers are truthy) and the Java approach (integers cannot be used in conditionals, 1+(1>0) is a type error). Both approaches make sense to me (although I prefer the first), but Julia chose a weird mix.
Reverse and Invert your Code
quine code-golf
Challenge
In this challenge. You'll be writing a program / function which will output or return it's own source code, reversed and inverted.
First, each character should be converted to it's character code. Then, that should be converted to base-2....
'Nother challenge: Shortest code where escaping/unescaping one character in a string (a char that normally has to be escaped like ") outputs "yes" in one case and "no" in the other. No errors allowed in either case.
@Dennis Came across something from much earlier while following a starred message, about automatic type casts between bool and int. It makes sense to me that a relatively safe language (which means one other than C/C++) would cast automatically from bool to int, but not the other way. The value of a bool can always be represented by an int without losing any information. The opposite is not the case, you generally lose information when casting an int to bool.
Only doing automatic casts that don't lose information seems like a sane policy.
@Dennis I always thought that the "don't compare floats for equality" was an oversimplification. While it's certainly true that cases where this makes sense are very rare, there are similar dangers in any float comparison, not only for equality. Take the kind of for loop commonly written by beginners: for (float t = 0.0f; t < 1.0f; t += 0.1f). No comparison for equality in this code. Still just as wrong.
Really though, I rarely see people use integer loop indices in R. It's always for (i in 1:5) rather than for (i in 1L:5L) because that's both annoying and not obvious.
I've pretty much only seen integer loop indices in the R source code.
@AlexA. Want to see some interesting for loops? stackoverflow.com/questions/26536570/…. Not only in the question, but they are still also in the accepted and most highly voted answer.
Goal
Sometimes dinner menus can have long winded names. It's much easier for the waiter to write an abbreviation that unambiguously identifies the dish.
For example, given this list:
beef burger
chicken burger
chicken nuggets
The abbreviation c n matches chicken nuggets.
The abbreviation bu...
Reverse and Invert your Code
quine code-golf
Challenge
In this challenge. You'll be writing a program / function which will output or return it's own source code, reversed and inverted.
First, each character should be converted to it's character code. Then, that should be converted to base-2....
