| public <T> T streamQuery(String sql, Function<Stream<SqlRowSet>, ? extends T> streamer, Object... args) { | |
| return jdbcTemplate.query(sql, resultSet -> { | |
| final SqlRowSet rowSet = new ResultSetWrappingSqlRowSet(resultSet); | |
| final boolean parallel = false; | |
| // The ResultSet API has a slight impedance mismatch with Iterators, so this conditional | |
| // simply returns an empty iterator if there are no results | |
| if (!rowSet.next()) { | |
| return streamer.apply(StreamSupport.stream(Spliterators.emptySpliterator(), parallel)); | |
| } |
| #!/usr/bin/env ruby | |
| # Usage | |
| # $ docker-machine create my-machine123 -d virtualbox | |
| # $ ruby <(curl -L https://git.io/vvvco) my-machine123 | |
| # https://gist.github.com/mattes/4d7f435d759ca2581347 | |
| require 'erb' | |
| bootlocalsh = %Q(#/bin/bash |
A simple Ghostscript command to merge two PDFs in a single file is shown below:
gs -dNOPAUSE -sDEVICE=pdfwrite -sOUTPUTFILE=combine.pdf -dBATCH 1.pdf 2.pdfInstall Ghostscript:
Type the command sudo apt-get install ghostscript to download and install the ghostscript package and all of the packages it depends on.