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memoization

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Gwenhael Le Moine 2021-04-10 17:39:24 +02:00
parent b031127e9c
commit 140ec7f9d5
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1 changed files with 10 additions and 2 deletions
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ledger.cr
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@ -7,11 +7,19 @@ class Ledger
ledger_file : String = ENV[ "LEDGER_FILE" ] ||= "${ENV[ \"HOME\" ]}/org/comptes.ledger" ) ledger_file : String = ENV[ "LEDGER_FILE" ] ||= "${ENV[ \"HOME\" ]}/org/comptes.ledger" )
@binary = binary @binary = binary
@file = ledger_file @file = ledger_file
@cache = Hash(String, String).new
end end
def run( options : String, command : String = "", command_parameters : String = "" ) : String def run( options : String, command : String = "", command_parameters : String = "" ) : String
STDERR.puts "#{@binary} -f #{@file} #{options} #{command} #{command_parameters}" command = "#{@binary} -f #{@file} #{options} #{command} #{command_parameters}"
`#{@binary} -f #{@file} #{options} #{command} #{command_parameters}` STDERR.puts command
mtime = File.info(@file).modification_time
key = "#{mtime}#{command}"
@cache[ key ] = `#{command}` unless @cache.has_key?( key )
@cache[ key ]
end end
def version : String def version : String