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shichao-an / flexible_array_member.c
Last active April 15, 2016 06:59
Flexible array member
#include <stdio.h>
#include <stdlib.h>
typedef struct string
{
int length;
char chars[];
} string;
int main(int argc, char * argv[])
@shichao-an
shichao-an / struct_offset.c
Created April 15, 2016 05:27
Get offsets of struct members using offsetof
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
typedef struct
{
int x;
short y[3];
long long z;
} data_t;
@shichao-an
shichao-an / array-params.c
Created March 2, 2016 07:56
Arrays as function parameters in C
#include <stdio.h>
#include <stdlib.h>
/* the array name by default is a pointer to its first element,
* similar to test2
*/
void test1(int len, int x[])
{
int i;
for (i = 0; i < len; i++)
@shichao-an
shichao-an / sbcsucks.sh
Last active February 25, 2016 07:53
sbcsucks.sh
#!/usr/bin/env bash
# Check if SBC is stable and send a notification
OUTSIDE_HOST="${1:-8.8.8.8}"
PING_COUNT=15
PING_TIMEOUT=15
PING_INTERVAL=0.5
ASC_MBP="10.0.1.10"
STATUS="unknown"
@shichao-an
shichao-an / restore-default-route
Last active February 25, 2016 06:26
Personal Hotspot Backup Plan (OS X)
#!/usr/bin/env bash
# After disconnecting from the iPhone Hotspot, run this command
OLD_DEFAULT_ROUTE="10.0.1.1"
# Turn off WiFi
networksetup -setairportpower en0 off
# Flush all routes
sudo route flush
@shichao-an
shichao-an / evdn1.md
Last active February 12, 2016 23:41
English Vocabulary Digest Note 1
  • retroactive: 有追溯效力的; 追加的 example: a retroactive notice
  • afaik, AFAIK: as far as I know
  • recap (v.) 总结
  • drill down (v.) 钻取数据
  • to this end (v.) to achieve the previously specified goal.
  • predate (v.) 早于
  • roll out (v.) 推出; 展出; introduce; to initiate or produce for the first time;
  • verbiage (n.) 连篇累牍
  • surface (vi.) 露出水面; 出现; 重新出现
  • grinding (adj.) 刺耳的; 完全的; 难于忍受的
@shichao-an
shichao-an / base_class.py
Created February 4, 2016 06:35
The Base class
class Base(object):
def __repr__(self):
try:
u = self.__str__()
except (UnicodeEncodeError, UnicodeDecodeError):
u = '[Bad Unicode data]'
repr_type = type(u)
return repr_type('<%s: %s>' % (self.__class__.__name__, u))
def __str__(self):
@shichao-an
shichao-an / vim_ag.txt
Created January 28, 2016 18:43
Vim Ag.vim crash dump
2016-01-28 10:41:06.926 Vim[33161:8900878] *** -[NSMachPort handlePortMessage:]: dropping incoming DO message because the connection is invalid
2016-01-28 10:41:06.932 Vim[33161:8900878] *** Terminating app due to uncaught exception 'NSInvalidReceivePortException', reason: 'connection is invalid'
*** First throw call stack:
(
0 CoreFoundation 0x00007fff95bddae2 __exceptionPreprocess + 178
1 libobjc.A.dylib 0x00007fff8d67cf7e objc_exception_throw + 48
2 CoreFoundation 0x00007fff95bdd98d +[NSException raise:format:] + 205
3 Foundation 0x00007fff86883b35 -[NSConnection sendInvocation:internal:] + 239
4 CoreFoundation 0x00007fff95b19412 ___forwarding___ + 514
5 CoreFoundation 0x00007fff95b19188 _CF_forwarding_prep_0 + 120
@shichao-an
shichao-an / cpp-dM.sh
Last active January 17, 2016 05:34
Show all the predefined macros: generate a list of #define directives for all the macros defined during the execution of the preprocessor
cpp -dM /dev/null
@shichao-an
shichao-an / .sshrc
Last active December 21, 2015 21:36
~/.sshrc for Ubuntu and Debian
# If .profile already exists, execute it.
if [ -f "$HOME/.profile" ]; then
. "$HOME/.profile"
else
# Otherwise, copy .profle from /etc/skel
if [ -f "/etc/skel/.profile" ]; then
cp /etc/skel/.profile "$HOME"
fi
# Also check if .bashrc exists and otherwise copy it from /etc/skel
if [ ! -f "$HOME/.bashrc" ]; then