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How does one generate a random number in Apple's Swift language?
...wift 4.2 shipped with Xcode 10 introduces new easy-to-use random functions for many data types.
You can call the random() method on numeric types.
let randomInt = Int.random(in: 0..<6)
let randomDouble = Double.random(in: 2.71828...3.14159)
let randomBool = Bool.random()
...
Unique Key constraints for multiple columns in Entity Framework
...ute is where you can specify the order of the columns in the index.
More information: MSDN
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How to add a new method to a php object on the fly?
...
You can harness __call for this:
class Foo
{
public function __call($method, $args)
{
if (isset($this->$method)) {
$func = $this->$method;
return call_user_func_array($func, $args);
}
}
}
...
How can I find where I will be redirected using cURL?
...ing the curl... Try:
curl_exec($ch);
...after setting the options, and before the curl_getinfo() call.
EDIT: If you just want to find out where a page redirects to, I'd use the advice here, and just use Curl to grab the headers and extract the Location: header from them:
$ch = curl_init();
curl_...
How to print a stack trace in Node.js?
...
+1 for also showing new Error().stack, which works in cases where you don't want to involve the console.
– Evgeniy Berezovsky
Jul 31 '12 at 4:19
...
How to dynamically compose an OR query filter in Django?
...,2,3]
# Turn list of values into list of Q objects
queries = [Q(pk=value) for value in values]
# Take one Q object from the list
query = queries.pop()
# Or the Q object with the ones remaining in the list
for item in queries:
query |= item
# Query the model
Article.objects.filter(query)
...
Is there a way to make npm install (the command) to work behind proxy?
...ronment variables, then issuing normally the command npm install express (for example)
EDIT2: As @BStruthers commented, keep in mind that passwords containing "@" wont be parsed correctly, if contains @ put the entire password in quotes
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How to write a CSS hack for IE 11? [duplicate]
How can I hack or write css only for IE 11? I have a website that looks bad in IE 11.I just search here and there but didnt find any solution yet.
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What does @: (at symbol colon) mean in a Makefile?
...ke writing a function in Python that only contains pass. It can be useful for stubbing blocks of code for copy/paste but they generally shouldn't exist for long. When stubbing this way the file would still compile, pass linting, etc.
– boweeb
May 21 '19 at 18...
Programmatically find the number of cores on a machine
... there a way to determine how many cores a machine has from C/C++ in a platform-independent way? If no such thing exists, what about determining it per-platform (Windows/*nix/Mac)?
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