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Why are preprocessor macros evil and what are the alternatives?
... have this:
#define safe_divide(res, x, y) if (y != 0) res = x/y;
and then
if (something) safe_divide(b, a, x);
else printf("Something is not set...");
It actually becomes completely the wrong thing....
Replacement: real functions.
3) Macros have no namespace
If we have a macro:
#defi...
C# vs C - Big performance difference
...low code. What about a C compiler which generated C# code, which you could then run through a C# compiler? How fast would that run? Languages don't have a speed. Your code does.
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What does Ruby have that Python doesn't, and vice versa?
...ck has been passed, control will be passed here.
end
end
end
Then you can invoke this like so:
# Add five to each element.
[1, 2, 3, 4].each{ |e| puts e + 5 }
> [6, 7, 8, 9]
Python has anonymous functions/closures/lambdas, but it doesn't quite have blocks since it's missing some ...
Simple insecure two-way data “obfuscation”?
...ate Key
generate Vector
Using it is easy: just instantiate the class and then call (usually) EncryptToString(string StringToEncrypt) and DecryptString(string StringToDecrypt) as methods. It couldn't be any easier (or more secure) once you have this class in place.
using System;
using System.Da...
How to redirect to Index from another controller?
...it out of context, so I will provide a full-fledged answer which works for Asp.Net Core 3.1. For completeness' sake:
[Route("health")]
[ApiController]
public class HealthController : Controller
{
[HttpGet("some_health_url")]
public ActionResult SomeHealthMethod() {}
}
[Route("v2")]
[ApiCon...
Usage of EnsureSuccessStatusCode and handling of HttpRequestException it throws
... can see to doing it this way is if the Content property is a long string, then you're basically slowing down the client, but if you're worried about speed, why not just use response.EnsureSuccessStatusCode();?
– John Zabroski
Aug 18 at 20:12
...
Bootstrap full-width text-input within inline-form
...box utility classes. Just have a flexbox container inside your column, and then give all the elements within it the "flex-fill" class. As with inline forms you'll need to set the margins/padding on the elements yourself.
.prop-label {
margin: .25rem 0 !important;
}
.prop-field {
m...
R programming: How do I get Euler's number?
...nd
exp(2)
represents e^2.
This works because exp is the exponentiation function with base e.
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Can a C++ enum class have methods?
...is not what John Doe would consider a class, too. Yet they can have member functions. And classes are really not mandatory for member functions. Using a designator like value or this, something like enum Size { Huge, Mega, Apocalypse; bool operator<(X rhs) const { return *this < rhs; } (here a...
Pure JavaScript equivalent of jQuery's $.ready() - how to call a function when the page/DOM is ready
...ncluding old versions of IE) and you don't want to wait for window.onload, then you probably should go look at how a framework like jQuery implements its $(document).ready() method. It's fairly involved depending upon the capabilities of the browser.
To give you a little idea what jQuery does (whi...