Course of Raku / Objects, I/O, and exceptions / Input and output / Working with files

Appending to a file

By default, spurt replaces whatever was in the file. To add to the end of an existing file instead, pass the :append named argument:

spurt 'log.txt', "line1\n";
spurt 'log.txt', "line2\n", :append;

print slurp 'log.txt';

The second spurt keeps the existing content and adds the new line after it, so the file ends up with both lines:

line1
line2

Without :append, the second call would have overwritten the file, leaving only line2. Appending is useful for things like log files, where each run of a program adds to a growing record rather than starting over.

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