rajgauttam’s gists

rajgauttam / OrderFlow.ipynb

Created March 9, 2023 20:26 — forked from sebjai/OrderFlow.ipynb

Optimal trading with order-flow and short-term alpha

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rajgauttam / non_equi_inner_join_in_pandas.py

Created October 17, 2020 19:24 — forked from Nikolay-Lysenko/non_equi_inner_join_in_pandas.py

How to join two DataFrames on conditions that can be other than exact match?

	"""
	Implementation of non-equi inner join in `pandas`.
	Non-equi join is a join with conditions other than exact match.
	For example, values from a column of a left `DataFrame` must be higher
	than values from a column of a right `DataFrame` and lower than values
	from another column of the right `DataFrame`.

	@author: Nikolay Lysenko
	"""

rajgauttam / MemoryAllocationHFT.cpp

Created June 10, 2020 20:35 — forked from silahian/MemoryAllocationHFT.cpp

Pre allocated vs dynamic arrays performance for low latency / high frequency trading systems

	// Example program
	#include <iostream>
	#include <string>
	#include <vector>
	#include <algorithm>
	#include <time.h>
	// ***********************************
	// This is for measuring CPU clocks
	#if defined(__i386__)
	static __inline__ unsigned long long rdtsc(void)

rajgauttam / gpg_test.py

Created May 6, 2019 22:04 — forked from ryantuck/gpg_test.py

working example of using gnupg in python

	# install:
	# pip3 install python-gnupg

	# note - gpg needs to be installed first:
	# brew install gpg
	# apt install gpg

	# you may need to also:
	# export GPG_TTY=$(tty)

rajgauttam / Application.java

Created March 22, 2019 11:44 — forked from serac/Application.java

Configuring RestTemplate for Client TLS in a Spring Boot Application

	/*
	* See LICENSE for licensing and NOTICE for copyright.
	*/
	package edu.vt.middleware.app;

	import java.io.File;
	import java.security.*;
	import java.util.ArrayList;
	import java.util.List;
	import java.util.function.Predicate;

rajgauttam / oreilly-freebooks.sh

Created September 19, 2018 10:53 — forked from nikAizuddin/oreilly-freebooks.sh

This UNIX Shell script will download most O'Reilly free pdf books about Programming, Security, Business, Data, Design, IoT, WebDev, and WebOps from http://www.oreilly.com/programming/free/.

	#!/bin/sh

	################################################################################
	## This UNIX Shell script will download most O'Reilly free pdf books
	## about Programming, Security, Business, Data, Design, IoT, WebDev, and WebOps
	## from http://www.oreilly.com/programming/free/.
	## There are a few books that are non-free, so I don't list them here.
	##
	## --- How to RUN? ---
	## $ sh -e oreilly-freebooks.sh

rajgauttam / CC150 8.2 callCenter.java

Created April 5, 2018 17:51 — forked from blindchaser/CC150 8.2 callCenter.java

8.2 Imagine you have a call center with three levels of employees: respondent, manager, and director. An incoming telephone call must be first allocated to a respondent who is free. If the respondent can't handle the call, he or she must escalate the call to a manager. If the manager is not free or not able to handle it, then the call should be …

	/* Title: CC150 8.2 callCenter
	* Time: 20140115
	* Creator: blindchaser
	* Time Complexity:
	* Space Complexity:
	* 优空间解法
	* 优时间解法：
	* 心得：可以跑
	*
	*

Raj Gauttam rajgauttam