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How does C compute sin() and other math functions?
...d by IBM. Since October 2011, this is the code that actually runs when you call sin() on a typical x86-64 Linux system. It is apparently faster than the fsin assembly instruction. Source code: sysdeps/ieee754/dbl-64/s_sin.c, look for __sin (double x).
This code is very complex. No one software algo...
Add shadow to custom shape on Android
Is it possible to add a drop shadow to a custom shape in Android? After looking through the documentation, I only see a way to apply a text shadow.
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Can't append element
... the line you want to set as breakpoint, you'll be end up getting only the call stack of the object without seeing the breakpoint on the source code, (not to mention that this keyword only works in webkit browser, all other major browsers seems to omit this keyword).
If you fully understand what yo...
What is the use of the %n format specifier in C?
...icular example, and in general one always could break up that first printf call:
int n = printf("%s: ", "hello");
printf("Foo\n");
printf("%*sBar\n", n, "");
Whether the slightly added convenience is worth using something esoteric like %n (and possibly introducing errors) is open to debate.)
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Set time to 00:00:00
...epresent a moment as it lacks any concept of time zone or offset-from-UTC. Calling LocalDateTime.now almost never makes sense. Use ZonedDateTime instead. Otherwise you are ignoring crucial time zone issues. For one thing, some dates in some zones do not start at 00:00!
– Basil ...
Can you animate a height change on a UITableViewCell when selected?
...nt to animate a height change, simply change the value of the variable and call this...
[tableView beginUpdates];
[tableView endUpdates];
You will find it doesn't do a full reload but is enough for the UITableView to know it has to redraw the cells, grabbing the new height value for the cell.... ...
C Macro definition to determine big endian or little endian machine?
...
Code supporting arbitrary byte orders, ready to be put into a file called order32.h:
#ifndef ORDER32_H
#define ORDER32_H
#include <limits.h>
#include <stdint.h>
#if CHAR_BIT != 8
#error "unsupported char size"
#endif
enum
{
O32_LITTLE_ENDIAN = 0x03020100ul,
O32_BIG_EN...
What is the difference between a process and a thread?
...erating environment feature, rather than a CPU feature (though the CPU typically has operations that make threads efficient).
Erlang uses the term "process" because it does not expose a shared-memory multiprogramming model. Calling them "threads" would imply that they have shared memory.
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High Quality Image Scaling Library [closed]
...e to a using declaration (or you could use a try finally and make sure you call dispose in your finally).
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Emulating a do-while loop in Bash
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Never said anything different, only that true is not a built-in in Bash. It's a program usually found in /bin.
– Fleshgrinder
Feb 12 at 22:07
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