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The best way to share data between activities in Android

  When programming Android, the question that what is the best design pattern for this problem is always in mind. Among the questions, it is most common that the best way to share data between activities. There are many solutions for this question.(http://stackoverflow.com/questions/4878159/android-whats-the-best-way-to-share-data-between-activities) I usually use a singleton class of the solutions.
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install parse-server & parse-dashboard at CentOS 7

yum install epel-release -y yum update -y shutdown -r now install mongodb https://docs.mongodb.com/manual/tutorial/install-mongodb-on-red-hat/#configure-the-package-management-system-yum semanage port -a -t mongod_port_t -p tcp 27017 curl --silent --location https://rpm.nodesource.com/setup_9.x | sudo bash - yum install git -y git clone https://github.com/ParsePlatform/parse-server.git sudo npm install -g parse-server mongodb-runner * install parse-server-example https://github.com/parse-community/parse-server-example.git * install parse-dashboard https://github.com/parse-community/parse-dashboard.git firewall-cmd --permanent --zone=public --add-port=4040/tcp semanage port -a -t mongod_port_t -p tcp 4040 parse-dashboard --config parse-dashboard-config.json --allowInsecureHTTP
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upgrade gitlab 5.0.1 to 7.10.4 on CentOS 6

1. backup     sudo gitlab-rake gitlab:backup:create      https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/raketasks/backup_restore.md     copy /var/opt/gitlab/backups/xxxxx_gitlab_backup.tar to temp directory 2. delete completely      sudo gitlab-ctl stop      sudo gitlab-ctl uninstall      sudo gitlab-ctl cleanse      sudo gitlab-ctl remove-accounts     https://forum.gitlab.com/t/complete-uninstall-gitlab-ce-from-ubuntu-14/6232 3. download gitlab-ce-7.10.4~omnibus.1-1.x86_64.rpm      https://packages.gitlab.com/gitlab/gitlab-ce/packages/el/6/gitlab-ce-7.10.4~omnibus.1-1.x86_64.rpm 4. install     sudo EXTERNAL_URL="http://gitlab.example.com" rpm -i gitlab-ce-7.10.4~omnibus.1-1.x86_64.rpm      https://docs.gitlab.com/omnibus/manual_install.html 5. edit /etc/gitlab/gitlab.rb     external_url   6....
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