Exploring [The Go Language][1] is so much fun. Everything is brand new, and different then any other language. This time I’m going to show quick snippet which shows how to read JSON object with unknown structure, and map elements to something like hash table.
For a while i’m playing with
The Go Programming Language
– so far I loved it. I figure out that I’ll push some code snippets from time to time.
Today I spend some time creating simple not ever crawler, but website fetcher.
Idea is very simple – download page, run xpath query on it and spit out results. I was looking for decent xpath library for Go and couldn’t find any. I tried to use
xmlpath
but it sucks. I couldn’t even run queries like id('product-details')/div[@class='product-price']" Then I found something nicer –
Gokogiri
– which works pretty nicely, but – couldn’t find any examples except this
small article
.
The only problem with running Gokogiri is that it uses libxml2 which is not a huge problem on Linux based systems, but on Mac OS X you have to install it via
homebrewbrew install libxml2
Node.js is like space shuttle – very sophisticated, very fast but one simple mistake and… it goes down.
So recently i tried The Go Language which is advertised as
Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.
Because google is a creator of this langauge documentation sucks. Plenty of random documents of everwhere, no clean how to documentation.
