Created
March 5, 2024 11:30
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Classe Ruby simples para gerar arquivos CSV de maneira mais dinâmica
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require 'csv' | |
class CSVBuilder | |
def initialize | |
@columns = [] | |
@data = [] | |
end | |
def add_column(column_name) | |
@columns << column_name | |
end | |
def remove_column(column_name) | |
@columns.delete(column_name) | |
@data.each { |row| row.delete(column_name) } | |
end | |
def add_row(row_data) | |
@data << row_data | |
end | |
def export_csv(file_name) | |
CSV.open(file_name, 'w') do |csv| | |
csv << @columns | |
@data.each do |row| | |
csv << @columns.map { |column| row[column] } | |
end | |
end | |
end | |
end | |
# Exemplo de uso | |
csv_builder = CSVBuilder.new | |
csv_builder.add_column('Nome') | |
csv_builder.add_column('Idade') | |
csv_builder.add_column('Cidade') | |
csv_builder.add_row({ 'Nome' => 'João', 'Idade' => 30, 'Cidade' => 'São Paulo' }) | |
csv_builder.add_row({ 'Nome' => 'Maria', 'Idade' => 25, 'Cidade' => 'Rio de Janeiro' }) | |
csv_builder.export_csv('output.csv') | |
# Remover uma coluna | |
csv_builder.remove_column('Cidade') | |
# Adicionar uma nova linha | |
csv_builder.add_row({ 'Nome' => 'Pedro', 'Idade' => 35 }) | |
# Exportar o CSV novamente | |
csv_builder.export_csv('output_modificado.csv') |
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