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ryochack / Pre K&R C: obscurity structure
Last active December 11, 2015 06:08
#define REG_ADDRESS 0170000
/* 無名構造体 */
struct {
int integ;
};
main() {
int a;
a = REG_ADDRESS->integ; /* レジスタ値の読み出し */
@ryochack
ryochack / const_array.go
Created April 16, 2013 14:50
package main
func main() {
const carray = [...]int{1,2,3,4,5}
}
@ryochack
ryochack / flag_shorthand.go
Last active December 16, 2015 08:18
package main
import (
"flag"
"fmt"
)
func main() {
var (
boolFlag bool
@ryochack
ryochack / flag_checkall.go
Created April 17, 2013 13:58
package main
import (
"flag"
"fmt"
"os"
)
func main() {
var (
@ryochack
ryochack / sum_simple.go
Created April 21, 2013 06:54
package main
import (
"fmt"
"sync/atomic"
)
func main() {
const num = 1000
@ryochack
ryochack / sum_simple.go
Created April 21, 2013 08:23
package main
import (
"fmt"
"time"
)
func main() {
const num = 100000
@ryochack
ryochack / sum_goroutine.go
Last active December 16, 2015 11:39
package main
import (
"fmt"
"time"
)
func main() {
const num = 100000
@ryochack
ryochack / open_read.c
Last active December 19, 2015 21:29
open/read vs open/mmap vs fopen/fread on clang
##include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
inline int get_fsize(int fd) {
@ryochack
ryochack / open_mmap.c
Created July 17, 2013 13:08
open/read vs open/mmap vs fopen/fread on clang
#include <sys/types.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdio.h>
#include <string.h>
inline int get_fsize(int fd) {
@ryochack
ryochack / open_mmap_adv.c
Created July 17, 2013 13:09
open/read vs open/mmap vs fopen/fread on clang
#include <sys/types.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdio.h>
#include <string.h>
inline int get_fsize(int fd) {