(Ruby) CSV Set Column Name

Demonstrates how to set the name of a column in a CSV.

Chilkat Ruby Downloads install from rubygems.org gem install chilkat or download... Ruby Library for Windows, MacOS, Linux, Alpine Linux

require 'chilkat'

# We have the following CSV...

# permalink,company,numEmps,category,city,state,fundedDate,raisedAmt,raisedCurrency,round
# lifelock,LifeLock,,web,Tempe,AZ,1-May-07,6850000,USD,b
# mycityfaces,MyCityFaces,7,web,Scottsdale,AZ,1-Jan-08,50000,USD,seed
# flypaper,Flypaper,,web,Phoenix,AZ,1-Feb-08,3000000,USD,a
# infusionsoft,Infusionsoft,105,software,Gilbert,AZ,1-Oct-07,9000000,USD,a
# gauto,gAuto,4,web,Scottsdale,AZ,1-Jan-08,250000,USD,seed

bCrlf = true
sb = Chilkat::CkStringBuilder.new()
sb.AppendLine("permalink,company,numEmps,category,city,state,fundedDate,raisedAmt,raisedCurrency,round",bCrlf)
sb.AppendLine("lifelock,LifeLock,,web,Tempe,AZ,1-May-07,6850000,USD,b",bCrlf)
sb.AppendLine("mycityfaces,MyCityFaces,7,web,Scottsdale,AZ,1-Jan-08,50000,USD,seed",bCrlf)
sb.AppendLine("flypaper,Flypaper,,web,Phoenix,AZ,1-Feb-08,3000000,USD,a",bCrlf)
sb.AppendLine("infusionsoft,Infusionsoft,105,software,Gilbert,AZ,1-Oct-07,9000000,USD,a",bCrlf)
sb.AppendLine("gauto,gAuto,4,web,Scottsdale,AZ,1-Jan-08,250000,USD,seed",bCrlf)

csv = Chilkat::CkCsv.new()

csv.put_HasColumnNames(true)
success = csv.LoadFromString(sb.getAsString())

# Get each column name..
numCols = csv.get_NumColumns()
i = 0
while i < numCols
    print csv.getColumnName(i) + "\n";
    i = i + 1
end
print "---" + "\n";

# Change the "numEmps" column name to "employeeCount"
success = csv.SetColumnName(2,"employeeCount")

numCols = csv.get_NumColumns()
i = 0
while i < numCols
    print csv.getColumnName(i) + "\n";
    i = i + 1
end

# Use the updated column name...
print "---" + "\n";
print csv.getCellByName(3,"employeeCount") + "\n";

# Output should be:

# permalink
# company
# numEmps
# category
# city
# state
# fundedDate
# raisedAmt
# raisedCurrency
# round
# ---
# permalink
# company
# employeeCount
# category
# city
# state
# fundedDate
# raisedAmt
# raisedCurrency
# round
# ---
# 105