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How to run a program without an operating system?
How do you run a program all by itself without an operating system running?
Can you create assembly programs that the computer can load and run at startup, e.g. boot the computer from a flash drive and it runs the program that is on the CPU?
...
printf() formatting for hex
...ypes.h>
#include <stdio.h>
int main(void)
{
void *address = &address; // &address has type void ** but it converts to void *
printf("Address 0x%.12" PRIXPTR "\n", (uintptr_t)address);
return 0;
}
Example output:
Address 0x7FFEE5B29428
Choose your poison on the len...
How to use pull to refresh in Swift?
...lf.tableView.reloadData() and self.refreshControl?.endRefreshing() in the callback?
– Qian Chen
Dec 6 '15 at 19:58
Exa...
How to allocate aligned memory only using the standard library?
...swer
{
void *mem = malloc(1024+16);
void *ptr = ((char *)mem+16) & ~ 0x0F;
memset_16aligned(ptr, 0, 1024);
free(mem);
}
Fixed answer
{
void *mem = malloc(1024+15);
void *ptr = ((uintptr_t)mem+15) & ~ (uintptr_t)0x0F;
memset_16aligned(ptr, 0, 1024);
free(me...
How do you read CSS rule values with JavaScript?
I would like to return a string with all of the contents of a CSS rule, like the format you'd see in an inline style. I'd like to be able to do this without knowing what is contained in a particular rule, so I can't just pull them out by style name (like .style.width etc.)
...
How do I resolve the “java.net.BindException: Address already in use: JVM_Bind” error?
...server > change the port numbers used (ie. for Tomcat admin, HTTP/1.1, & AJP/1.3)
– Adrien Be
Sep 27 '13 at 7:01
2
...
“is” operator behaves unexpectedly with integers
... use == and != to compare for equality and inequality, respectively. For example:
>>> a = 1000
>>> a == 1000 # Test integers like this,
True
>>> a != 5000 # or this!
True
>>> a is 1000 # Don't do this! - Don't use `is` to test integers!!
False
...
How to prevent form from submitting multiple times from client side?
... I agree. Should be form page ---submits to---> form_submission_script.php ---after saving, redirects to---> form_thankyou.html
– Simon East
Sep 7 '11 at 2:18
add a com...
How much is too much with C++11 auto keyword?
...ht, but the type of the right hand side of an expression is obvious. For example, using:
my_multi_type::nth_index<2>::type::key_type::composite_key_type::
key_extractor_tuple::tail_type::head_type::result_type
to get the composite key type in boost::multi_index, even though you know tha...
Simple (non-secure) hash function for JavaScript? [duplicate]
...odeAt(i);
hash = ((hash<<5)-hash)+char;
hash = hash & hash; // Convert to 32bit integer
}
return hash;
}
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