benwei

#http://en.wikipedia.org/wiki/Buddy_memory_allocation
#This is a dummy code for Buddy memory allocation implementation.

CFLAGS=-DHAVE_DEV_SYS
LDFLAGS=
CFILES=membuddy.c
OBJS=$(CFILES:.c=.o)
BINNAME=membuddy

all: $(BINNAME)

benwei

# reference:
# http://stackoverflow.com/questions/3190706/nonlocal-keyword-in-python-2-x
# http://en.wikipedia.org/wiki/Closure_(computer_science)#Example
#
def counter():
    d = {'x': 0} # tested with python 2.7.2
    def increment(y=1):
        # nonlocal only work for python3
        #nonlocal x
        d['x'] += y

benwei

#!/bin/sh

YD_HIST_DIR="${HOME}/.ydict_history"
mkdir -p "$YD_HIST_DIR/_relation/"
echo "$@" >> "${YD_HIST_DIR}"/_words.txt
WordCacheFile="${YD_HIST_DIR}"/"$@".txt
WordRelationFile="${YD_HIST_DIR}"/_relation/"$@".txt

if [ ! -f "$WordCacheFile" ]; then
ydict -u -w "$@" | sed -e "s/'/'/g" -e "s/\(.\[36m\)[ ]*/\1 /g" > "$WordCacheFile"

benwei

// regexp
// convert
// function a (a1,a2)
// that.a = function (a1, a2)

cat jsfile.js | sed -e 's/^\([ \t]*\)function[ \t]*\([a-zA-Z]*\)(/\1that.\2 = function (/g'

benwei

function SpentTime () {                                                                                                                                              
    this.reset = function () {
        start = new Date(); 
    }
    this.diff = function () {
        var now = new Date();
        return (now.getTime() - start.getTime()) 
    }
    var start = new Date();
}

benwei

how to git over ssh

create a base repository

 $ mkdir -p testprj
 $ cd testprj
 $ git init --bare

benwei

//
//  SOIPAddress.c
//
/*
 Copyright (c) 2013, Ben Wei
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
 
 Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

benwei

int led = 13;

void setup()
{
  Serial.begin(9600);//设置波特率为9600bps
  pinMode(led, OUTPUT);
}


void turnon_led() {

benwei

#!/bin/sh

find -name "*.c" | while read fn ; do wc -l $fn ; done

benwei

replace
   test-keyworkd : anything ;
to 
   “test-keyworkd” :“anything”,

regex:

s/^\([ \t]*\)\([a-z-]*\):[ \t]*\(.*\);/\1"\2":"\3",/g