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What is the best way to find the users home directory in Java?
... Linux, other unix variants. I am looking for a snippet of code that can accomplish this for all platforms, and a way to detect the platform.
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UINavigationController without navigation bar?
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Can I change the viewport meta tag in mobile safari on the fly?
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How to generate an openSSL key using a passphrase from the command line?
... the private key is not encrypted with any symmetric cipher - it is output completely unprotected.
You can generate a keypair, supplying the password on the command-line using an invocation like (in this case, the password is foobar):
openssl genrsa -aes128 -passout pass:foobar 3072
However, not...
What's the difference between “Request Payload” vs “Form Data” as seen in Chrome dev tools Network t
...load body. That’s all it can do because it has no idea where the data is coming from.
If you submit a HTML-Form with method="POST" and Content-Type: application/x-www-form-urlencoded or Content-Type: multipart/form-data your request may look like this:
POST /some-path HTTP/1.1
Content-Type: appl...
Non-type template parameters
...is because non-constant expressions can't be parsed and substituted during compile-time. They could change during runtime, which would require the generation of a new template during runtime, which isn't possible because templates are a compile-time concept.
Here's what the standard allows for non-t...
How do API Keys and Secret Keys work? Would it be secure if I have to pass my API and secret keys to
...can be executed. This is the same problem DRM has, except that you own the computer.
In many cases, I just put secret keys in a file with limited permissions, and take the usual precautions to prevent my system from being rooted. There are a few tricks to make it work properly with a multiuser syst...
How do I enable TODO/FIXME/XXX task tags in Eclipse?
... my years of using Eclipse, I never knew until now that TODO / FIXME / XXX comment tags are supposed to appear in the task list. Apparently this is something that is disabled by default because I have been using those tags for as long as I've been using Eclipse and I have never seen one of them appe...
How to throw a C++ exception
...
Simple:
#include <stdexcept>
int compare( int a, int b ) {
if ( a < 0 || b < 0 ) {
throw std::invalid_argument( "received negative value" );
}
}
The Standard Library comes with a nice collection of built-in exception objects you can t...
How do I check if a type is a subtype OR the type of an object?
...will also give you false positives. As Eric Lippert has pointed out in the comments, while the method will indeed return True for the two above questions, it will also return True for these, which you probably don't want:
void Main()
{
typeof(Base).IsAssignableFrom(typeof(Derived)).Dump();
...