May 30, 2013 · In programming languages we are habitual of using asterisk (*) symbol for multiplication sign. I was wondering how time can map to a cross (or x alphabet symbol) …

Apr 3, 2015 · The escape sequence you're using does not represent the × sign. It represents U+274C CROSS MARK, which is an entirely different symbol altogether (and one …

Your title says something else than "infinity times zero". It says "infinity to the zeroth power". It is also an indefinite form because $$\infty^0 = \exp (0\log \infty) $$ but $\log\infty=\infty$, so the …

May 16, 2019 · I want to verify if a method is called at least once through mockito verify. I used verify and it complains like this: …

Jun 13, 2020 · Is there a formal proof for $(-1) \\times (-1) = 1$? It's a fundamental formula not only in arithmetic but also in the whole of math. Is there a proof for it or is it just assumed?

Here is a simple way to loop any number of times in PowerShell. It is the same as the for loop above, but much easier to understand for newer programmers and scripters.

Feb 12, 2017 · It's a simple question about regular expressions, but I'm not finding the answer. I want to determine whether a number appears in sequence exactly two or four times. What …

Oct 22, 2020 · How can I repeat a string multiple times, multiple times? I know I can use a for loop, but I would like to repeat a string x times per row, over n rows. For example, if the user …

Feb 17, 2022 · I am attempting to use regex to match a pattern where we have some X (any character) which occurs exactly n many times in succession. I know a little about regex, but …

Someone recently asked me why a negative $\\times$ a negative is positive, and why a negative $\\times$ a positive is negative, etc. I went ahead and gave them a proof by contradiction like …