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bundle exec rails webpacker:binstubs

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this.setState({ makeCalls: true }, () => {
        console.log("makeCalls: ", this.state.makeCalls)
        }
      )

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SELECT * FROM schema_migrations;
DELETE FROM schema_migrations WHERE version IN (<version>);

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#strip whitespace from headers
CSV.foreach("tmp/client_mapping.csv", {headers: true,:header_converters=> lambda {|f| f.strip}) do
end

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# Application controller

def user_root_path
  your_url_here
end

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sudo service redis-server stop

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pg_ctl -D /usr/local/var/postgresql@version start
pg_ctl -D /usr/local/var/postgresql@version stop

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  @avg_score_hash = Hash.new { |hash, key| hash[key] = [] } 
  @rows.each do |row|
    row.last.each_with_index do |column, index|
      if column != 0
        @avg_score_hash[index] << column
      end
    end
  end
  @avg_score_hash  
  

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class ArrayFlattener

    #recursive function
    def flatten_this(arr)
        raise ArgumentError, 'Argument is not an array' unless arr.is_a? Array 
        arr.each_with_object([]) do | element, flat_array |
            flat_array.push *( element.is_a?(Array) ? flatten_this(element) : element )
        end
    end

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sudo -u postgres psql
psql -d template1