Anvy Zhang anvyzhang

anvyzhang / howto_put_utf8_bom_in_csv_file.rb

Created March 21, 2017 02:24 — forked from mrluanma/howto_put_utf8_bom_in_csv_file.rb

	#!/usr/bin/ruby
	# -- coding: utf-8 --

	$KCODE = 'u'
	require 'csv'

	File.open('tmp.csv', 'wb') do \|csv_file\|
	# 输出标明文本编码为 UTF-8 的 BOM
	csv_file.write("\xEF\xBB\xBF")

anvyzhang / pretty-print.scala

Created September 8, 2016 03:57 — forked from carymrobbins/pretty-print.scala

Pretty print Scala case classes and other data structures.

	/**
	* Pretty prints a Scala value similar to its source represention.
	* Particularly useful for case classes.
	* @param a - The value to pretty print.
	* @param indentSize - Number of spaces for each indent.
	* @param maxElementWidth - Largest element size before wrapping.
	* @param depth - Initial depth to pretty print indents.
	* @return
	*/
	private def prettyPrint(a: Any, indentSize: Int = 2, maxElementWidth: Int = 30, depth: Int = 0): String = {

anvyzhang / em-http-request.rb

Created October 24, 2013 08:32

Test async http request vs sync http request

anvyzhang / mongoid_cursor.rb

Last active December 18, 2015 06:09

When a mongo collection is too large for RAM, use cursor this way.

	App.db.collection('apps').find({'name' => 'test_name'},{:timeout => false}){\|ptr\| ptr.each{\|x\| puts x['user_id']}}

	# NOTE in cursor iteration
	ptr.each{\|x\|
	x.user_id # WRONG
	x['user_id'] # RIGHT
	}