kongliangzhong

##### SCALA LANGUAGE #####

1) Can someone tell me why this does not work?

case class XY(enum: MyEnum)

object MyEnum extends Enumeration {
  val OP1, OP2 = Value 
}
Error: not found: type MyEnum

kongliangzhong

C#:

1) output debug info in console:
  System.Diagnostics;
  ...

  Debug.WriteLine("");

2)  a regex that matchs html link:         
            var regEx = new Regex(

kongliangzhong

java compile error: illegal character: \65279

save file without BOM can fix this problem.
in emacs, just open the file and run: M-x set-buffer-file-coding-system, and save the file.

thrift

1) download thrift
2) cd $thrift-home
3) ./configure --with-ruby=no

kongliangzhong

######### ubuntu linux #########
1) host file:
 
127.0.0.1	localhost
127.0.1.1       zhongkongliang-desktop
 
# The following lines are desirable for IPv6 capable hosts
::1     localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix

kongliangzhong

#### EMACS TIPS ####

### cscope: ###
;; * Keybindings:
;;
;; All keybindings use the "C-c s" prefix, but are usable only while
;; editing a source file, or in the cscope results buffer:
;;
;;      C-c s s         Find symbol.
;;      C-c s d         Find global definition.

kongliangzhong

############### mongodb: ################
1) not master and slaveok=false
在写多读少的应用中，使用Replica Sets来实现读写分离。通过在连接时指定或者在主库指定slaveOk，由Secondary来分担读的压力，Primary只承担写操作。
对于replica set 中的secondary 节点默认是不可读的，
[mongodb@rac4 bin]$ mongo 127.0.0.1:28019
MongoDB shell version: 2.0.1
connecting to: 127.0.0.1:28019/test
SECONDARY> 
SECONDARY> 
SECONDARY> db.yql.find()

kongliangzhong

##### github related #####

---- emacs gist ----
git://github.com/defunkt/gist.el.git
# What's new in 1.0 ?
gist.el now maintains a local cache so as to not go to the gist server every now and then.
multi-files gist support (indicated by a '+' in the gist list)
improved gist-list buffer, based on tabulated-list.el (same codebase as package.el) New keybindings:
g : reload the gist list from server
e : edit current gist description

kongliangzhong

J2EE STUFF

=== JMX ===

===========

=== MAVEN ===
1. use plugin short name:
  add following content in ~/.m2/settings.xml:
  <profile>

kongliangzhong

### Docker ###

1) hello world:
   sudo docker run ubuntu:14.04 /bin/echo "hello, world!"

2) interactive:
   sudo docker run -t -i ubuntu:14.04 /bin/bash

3) daemonized hello world:
   sudo docker run -d ubuntu:14.04 /bin/bash -c "while true; do echo hello world; sleep 1; done"

kongliangzhong

 
/*

  Copyright 2017 Loopring Project Ltd (Loopring Foundation).

  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  You may obtain a copy of the License at

  http://www.apache.org/licenses/LICENSE-2.0