Map to file: Difference between revisions

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imported>StDoodle
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Not the only I/O functions anymore
 
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FunctionPage|
FunctionPage|
name={{#var:name}}|
name={{#var:name}}|
function_category=Miscellaneous|


function1={{Function|
function1={{Function|
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parameter1={{Param|aggregate|map_to_save}}|
parameter1={{Param|aggregate|map_to_save}}|
parameter2={{Param|string|file_to_save}}|
parameter2={{Param|string|file_to_save}}|
parameter3={{Param|boolean|condition}}|
parameter3={{Param|boolean|compact}}|
p1desc={{Pspan|file_to_save}} is the filename to save to|
p1desc={{Pspan|map_to_save}} is the map to save data from|
p2desc={{Pspan|map_to_save}} is the map to save data from|
p2desc={{Pspan|file_to_save}} is the filename to save to|
p3desc={{Pspan|condition}} is an (optional) condition that must be met for the function to act|
p3desc={{Pspan|compact}} is an (optional) flag; if omitted or true, record values are written on a single line of the file when possible, rather than one field per line|
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function_description=Saves the data in the {{pspan|map_to_save}} from to the {{pspan|file_to_save}} in your KoLmafia "data" directory. If {{pspan|condition}} is supplied, it must evalute to true in order for the function to proceed. This function returns the operation's success (if {{pspan|condition}} is supplied, and evaluates to false, this function returns true). If {{pspan|file_to_save}} already exists, this function will override (not append) the file's contents with the new data. It's also worth noting that, once saved, the data in {{pspan|file_to_save}} is not tied to any particular map; it can be loaded into another map or slice, as long as the datatypes are compatible.</p>
function_description=Saves the data in the {{pspan|map_to_save}} to the {{pspan|file_to_save}} in your KoLmafia "data" directory. The {{pspan|compact}} parameter exists only for backwards compatibility; there is no need to use it in new code (but if you do use it, you must pass the same value to [[file_to_map|file_to_map()]] to successfully read any records within your map). This function returns the operation's success. If {{pspan|file_to_save}} already exists, this function will override (not append) the file's contents with the new data. It's also worth noting that, once saved, the data in {{pspan|file_to_save}} is not tied to any particular map; it can be loaded into another map or slice, as long as the datatypes are compatible.</p>
<p>As this & [[file_to_map|file_to_map()]] are KoLmafia's only I/O functions, they are invaluable for an ASH scripter wishing to save any script settings or information too complex to easily fit in a user preference. However, caution should be used, as a single failed operation of this function could result in the loss of all such data. For anything difficult to re-create, or too important to lose, the script author should be careful to save backups and check for function success during such operations.|
 
<p>This function and <code>[[file_to_map|file_to_map()]]</code> are invaluable for an ASH scripter wishing to save any script settings or information too complex to easily fit in a user preference. However, caution should be used, as a single failed operation of this function could result in the loss of all such data. For anything difficult to re-create, or too important to lose, the script author should be careful to save backups and check for function success during such operations.|


code1={{CodeSample|
code1={{CodeSample|
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boolean [string] answers;
boolean [string] answers;
answers["Chocolate"] = user_confirm( "Do you like chocolate?" );
answers["Chocolate"] = user_confirm( "Do you like chocolate?" );
answers["Kittens"] = user_confirm( "Do you like kittens?" );
answers["CuteKittens"] = user_confirm( "Do you like cute kittens?" );
answers["KoL"] = user_confirm( "Do you like KoL?" );
answers["ThisGame"] = user_confirm( "Do you like KoL?" );
if (map_to_file( answers , "WhatYouLike.txt" ))
if (map_to_file( answers , "WhatYouLike.txt" ))
   print( "Your answers were saved successfully." );
   print( "Your answers were saved successfully." );
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<pre>
<pre>
Chocolate false
Chocolate false
Kittens true
CuteKittens true
KoL true
ThisGame true
</pre>
</pre>
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see_also={{SeeAlso|file_to_map}}|
see_also={{SeeAlso|buffer_to_file|file_to_array|file_to_buffer|file_to_map}}|
}}
}}
[[Category:Miscellaneous Functions]]

Latest revision as of 05:51, 21 December 2020

Function Syntax

boolean map_to_file(aggregate map_to_save ,string file_to_save )

boolean map_to_file(aggregate map_to_save ,string file_to_save ,boolean compact )

  • map_to_save is the map to save data from
  • file_to_save is the filename to save to
  • compact is an (optional) flag; if omitted or true, record values are written on a single line of the file when possible, rather than one field per line

Saves the data in the map_to_save to the file_to_save in your KoLmafia "data" directory. The compact parameter exists only for backwards compatibility; there is no need to use it in new code (but if you do use it, you must pass the same value to file_to_map() to successfully read any records within your map). This function returns the operation's success. If file_to_save already exists, this function will override (not append) the file's contents with the new data. It's also worth noting that, once saved, the data in file_to_save is not tied to any particular map; it can be loaded into another map or slice, as long as the datatypes are compatible.

This function and file_to_map() are invaluable for an ASH scripter wishing to save any script settings or information too complex to easily fit in a user preference. However, caution should be used, as a single failed operation of this function could result in the loss of all such data. For anything difficult to re-create, or too important to lose, the script author should be careful to save backups and check for function success during such operations.

Code Sample

This sample saves a simple map of a user's responses to questions.

boolean [string] answers;
answers["Chocolate"] = user_confirm( "Do you like chocolate?" );
answers["CuteKittens"] = user_confirm( "Do you like cute kittens?" );
answers["ThisGame"] = user_confirm( "Do you like KoL?" );
if (map_to_file( answers , "WhatYouLike.txt" ))
   print( "Your answers were saved successfully." );
else
   print( "There was a problem saving your answers." );

If the user answered No, Yes, Yes to the questions, they should now have a file that contains:

Chocolate	false
CuteKittens	true
ThisGame	true

See Also

buffer_to_file() | file_to_array() | file_to_buffer() | file_to_map()