xmzhao’s gists

xmzhao / build_gcc4.7.1.sh

Created November 15, 2012 06:36 — forked from Mistobaan/build_gcc4.7.1.sh

Build GCC 4.7.1 on Mac OS X Lion with Go support

	#!/bin/sh

	# GCC
	## Prerequisites for GCC
	## http://gcc.gnu.org/install/prerequisites.html
	## Installing GCC: Configuration
	## http://gcc.gnu.org/install/configure.html

	GCC_VER=4.7.1
	WORK_DIR=$HOME/Builds/GCC

xmzhao / gist:4078538

Created November 15, 2012 13:01

gccgo + peacock

	[gccgo]

	http://gcc.gnu.org/install/

	安装gmp\|mpfr\|mpc后(./configure --prefix=/data1/home/xueminzhao/gcc4.7.1/install/gmp\|mpfr\|mpc, make install)
	export gmp\|mpfr\|mpc的lib到LD_LIBRARY_PATH
	然后运行
	./configure \
	--prefix=/data1/home/xueminzhao/gcc4.7.1/install/gcc \
	--with-local-prefix=/data1/home/xueminzhao/gcc4.7.1/install/gcc \

xmzhao / gist:4110074

Created November 19, 2012 10:49

hadoop + peacock

	[编译libhdfs]

	https://github.com/forward/node-hdfs

	[编译github.com/zyxar/hdfs]
	因为zyxar/hdfs是根据hadoop 1.0.3编写, 需要修改:
	1. cgo部分
	删除github.com/zyxar/hdfs/hdfs.h, 修改import "C"为:

	/*

xmzhao / gist:4142180

Created November 25, 2012 02:40

hadoop

	http://coderplay.iteye.com/blog

xmzhao / gist:4144079

Created November 25, 2012 15:40

[hadoop] Passing parameters to Mappers and Reducer

	http://www.thecloudavenue.com/2011/11/passing-parameters-to-mappers-and.html

	There might be a requirement to pass additional parameters to the mapper and reducers, besides the the inputs which they process. Lets say we are interested in Matrix multiplication and there are multiple ways/algorithms of doing it. We could send an input parameter to the mapper and reducers, based on which the appropriate way/algorithm is picked. There are multiple ways of doing this

	Setting the parameter:

	1. Use the -D command line option to set the parameter while running the job.

	2. Before launching the job using the old MR API

xmzhao / gist:4211426

Created December 5, 2012 02:00

go pprof

	http://blog.golang.org/2011/06/profiling-go-programs.html

	go tool pprof http://10.168.152.18:12345/debug/pprof/profile

xmzhao / automata.py

Created November 23, 2015 06:43 — forked from Arachnid/automata.py

	import bisect

	class NFA(object):
	EPSILON = object()
	ANY = object()

	def __init__(self, start_state):
	self.transitions = {}
	self.final_states = set()
	self._start_state = start_state

xmzhao / connection_pool

Created December 2, 2016 07:16 — forked from opensourcegeek/connection_pool

A quick and easy way to reconnect to mysql when connection is lost, it uses gevent queues but still the idea should work whichever way the connections are pooled.

	from gevent import monkey
	monkey.patch_socket()
	import logging

	import gevent
	from gevent.queue import Queue
	import pymysql as db

	logging.basicConfig(level=logging.DEBUG)
	LOGGER = logging.getLogger("connection_pool")

xmzhao / merge_git_repo_as_subdir

Last active September 16, 2019 08:14 — forked from smdabdoub/merge_git_repo_as_subdir

Merge one git repository into another repository as a sub-directory

	# based on the following:
	# http://saintgimp.org/2013/01/22/merging-two-git-repositories-into-one-repository-without-losing-file-history/
	# http://blog.caplin.com/2013/09/18/merging-two-git-repositories/

	git clone Task (保证在master）
	git clone DopNluServer （保证在master）
	cd Task

	git remote add DopNluServer ../DopNluServer
	git fetch DopNluServer

Xuemin Zhao xmzhao