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Python executable not finding libpython shared library
...compiler complains about Python build finished successfully! The necessary bits to build these optional modules were not found: _bz2 _curses _curses_panel _gdbm _lzma _sqlite3 _tkinter readline
– Nathan...
Convert interface{} to int
... JSON, uses Javascript syntax and definitions. JavaScript only supports 64-bit floating point numbers. Ref# javascript.info/number
– Mujibur
May 10 '19 at 3:45
...
How do cache lines work?
...ne you need that is multiple of 64).
Modern PC memory modules transfer 64 bits (8 bytes) at a time, in a burst of eight transfers, so one command triggers a read or write of a full cache line from memory. (DDR1/2/3/4 SDRAM burst transfer size is configurable up to 64B; CPUs will select the burst t...
How can I create directory tree in C++/Linux?
...<string.h>
/* "sysstat.h" == <sys/stat.h> with fixup for (old) Windows - inc mode_t */
#include "sysstat.h"
typedef struct stat Stat;
static int do_mkdir(const char *path, mode_t mode)
{
Stat st;
int status = 0;
if (stat(path, &st) != 0)
{
...
Call Go functions from C
...w that isn't very helpful. Here is a short snippet without any unnecessary bits. It should make things a little clearer.
package foo
// extern int goCallbackHandler(int, int);
//
// static int doAdd(int a, int b) {
// return goCallbackHandler(a, b);
// }
import "C"
//export goCallbackHandler
...
How to shut down the computer from C#
...
Works starting with windows XP, not available in win 2000 or lower:
This is the quickest way to do it:
Process.Start("shutdown","/s /t 0");
Otherwise use P/Invoke or WMI like others have said.
Edit: how to avoid creating a window
var p...
Specifically, what's dangerous about casting the result of malloc?
...be a no-op. So it might "just work", or the value could be corrupted (some bits lost, perhaps), or the caller could pick up completely the wrong value.
– Steve Jessop
Oct 15 '09 at 11:20
...
What's the advantage of a Java enum versus a class with public static final fields?
... use them in switch statements; I'll throw that in as well.
This allows arbitrarily complex enums to be used in a clean way without using instanceof, potentially confusing if sequences, or non-string/int switching values. The canonical example is a state machine.
...
How to run a program without an operating system?
... userland assembly instructions, we have:
.code16: tells GAS to output 16-bit code
cli: disable software interrupts. Those could make the processor start running again after the hlt
int $0x10: does a BIOS call. This is what prints the characters one by one.
The important link flags are:
--ofor...
Benchmarking (python vs. c++ using BLAS) and (numpy)
...achines
Linux (MKL, ATLAS, No-MKL, GotoBlas2):
OS: Ubuntu Lucid 10.4 64 Bit.
CPU: 2 x 4 Intel(R) Xeon(R) E5504 @ 2.00GHz (8 Cores)
RAM: 24 GB
Intel Compiler: 11.1/073
Scipy: 0.8
Numpy: 1.5
Mac Book Pro (Accelerate Framework):
OS: Mac OS X Snow Leopard (10.6)
CPU: 1 Intel Core 2 Duo 2.93 Ghz ...