ravyg

Node* deleteNode(Node* head, int val) {
    if (head != NULL) {
        Node* curr = head;
        Node* prev = nullptr;
        while(curr->val != val) {
            prev = curr;
            if (curr->next != nullptr) curr=curr->next;
            else return nullptr;
        }
        if (prev != nullptr) prev->next = curr->next;

ravyg

#!/usr/bin/env python
# -*- coding: utf-8 -*- 
# Parts of this code have be taken from Dr.Calix's ITS520 Class at Purdue University.
# Co-Authored: Ravish Gupta
##########################################################
import csv
import warnings
import matplotlib.pyplot as plt
import tensorflow as tf
import numpy as np

ravyg

# -*- coding: utf-8 -*-
import json
import re
import os
import nltk

input_file = open('<JSON FILE To INPUT>','r').readlines()
for line in input_file:   
    try:
        tweet = json.loads(line)

ravyg

# Find the number of line in a file type recuresively.
find . -name '*.php' | xargs wc -l

# Find occurence on on word say "carrot" in many files.
grep -ir carrot . | wc -l 

# This helps in moving files so keep backup!!!
# Moves files with json extension from sub-folders recursively to single output folder.
find <parent/folders/subfolders> -type f -name '*.json' -exec mv -i {} <new/folder> \;

ravyg

# Command pipeline 
# Non hadoop way using only linux commands.
cat data | map | sort | reduce
# some text to mapper.
echo "foo foo quux labs foo bar quux" | <dirto/>mapper.py
# Some text to mapper then sort and then reducer.
echo "foo foo quux labs foo bar quux" | <dirto/>mapper.py | sort-K1, 1 | <dirto/>reducer.py
# Doing with file.
cat myfilename.txt | <dirto/>mapper.py | sort-K1, 1 | <dirto/>reducer.py

ravyg

pg_ctl -D /usr/local/var/postgres -l /usr/local/var/postgres/server.log start

ravyg

# Importing a db with multiple bson files 
# Note each bson is a collection.
mongorestore -d db_name path/

# To start db use:
mongo db_name

# To see collections use:
show collections

ravyg

Install Homebrew:

ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

Update Homebrew formulae:

brew update

ravyg

VARIABLE SET:
  drush vset --yes file_private_path <path-to-private-files> | drush vset --yes file_temporary_path <path-to-temporary-file> | 

NOT NEEDED ADMIN AND NEEDED ADMIN MENU
  drush dis admin -y | drush en admin_menu diff field_ui -y

DRUSH KICKSTART
  drush dl [drupal-version]
  drush si --db-url=mysql://[dbusername]:[dbpassword]@localhost/[dbname]
  drush upwd admin --password=[MyEasyDevPassword]

ravyg

- Knowing the ".info" files
    Tell drupal about your theme.

- Playing with ".tpl.php" (Template) files
    Place for your all HTML structure.
    
- Variables in ".tptl.php" files
    Dynamic bits of content which is to be printed in your template file.
    
- Theme Functions overriding.