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clang: how to list supported target architectures?
...d clang binaries may not correspond to the same version of LLVM.
However, for the sake of argument, let's say that you compiled both LLVM and Clang yourself or that you're otherwise happy to accept your LLVM binaries as good enough:
llc --version will give a list of all architectures it supports....
What's the $unwind operator in MongoDB?
...ts, joins, etc. from your mind. The way that it stores your data is in the form of documents and collections, which allows for a dynamic means of adding and obtaining the data from your storage locations.
That being said, in order to understand the concept behind the $unwind parameter, you first mu...
Is there a way to instantiate objects from a string holding their class name?
...rivedB> DerivedB::reg("DerivedB");
You could decide to create a macro for the registration
#define REGISTER_DEC_TYPE(NAME) \
static DerivedRegister<NAME> reg
#define REGISTER_DEF_TYPE(NAME) \
DerivedRegister<NAME> NAME::reg(#NAME)
I'm sure there are better names for thos...
Differences and relationship between glActiveTexture and glBindTexture
...
All About OpenGL Objects
The standard model for OpenGL objects is as follows.
Objects have state. Think of them as a struct. So you might have an object defined like this:
struct Object
{
int count;
float opacity;
char *name;
};
The object has certain v...
Downloading Java JDK on Linux via wget is shown license page instead
...
*Works as of 07-11-2020 for JDK 14
wget --no-check-certificate -c --header "Cookie: oraclelicense=accept-securebackup-cookie" https://download.oracle.com/otn-pub/java/jdk/14.0.1+7/664493ef4a6946b186ff29eb326336a2/jdk-14.0.1_linux-x64_bin.rpm -O ~/Do...
Difference between int32, int, int32_t, int8 and int8_t
...different times, both 16 bits and 32 bits have been reasonably common (and for a 64-bit implementation, it should probably be 64 bits).
On the other hand, int is guaranteed to be present in every implementation of C, where int8_t and int32_t are not. It's probably open to question whether this matt...
Getting visitors country from their IP
...;
if ($deep_detect) {
if (filter_var(@$_SERVER['HTTP_X_FORWARDED_FOR'], FILTER_VALIDATE_IP))
$ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
if (filter_var(@$_SERVER['HTTP_CLIENT_IP'], FILTER_VALIDATE_IP))
$ip = $_SERVER['HTTP_CLIENT_IP'];
...
What is an 'endpoint' in Flask?
.../greeting/<name>')
def give_greeting(name):
return 'Hello, {0}!'.format(name)
Note that the function you referred to (add_url_rule) achieves the same goal, just without using the decorator notation. Therefore, the following is the same:
# No "route" decorator here. We will add routing u...
jQuery AJAX file upload PHP
...loads directory. The jQuery ajax method (running in the browser) sends the form data to the server, then a script on the server handles the upload. Here's an example using PHP.
Your HTML is fine, but update your JS jQuery script to look like this:
$('#upload').on('click', function() {
var file...
What belongs in an educational tool to demonstrate the unwarranted assumptions people make in C/C++?
I'd like to prepare a little educational tool for SO which should help beginners (and intermediate) programmers to recognize and challenge their unwarranted assumptions in C, C++ and their platforms.
...