Empty program: Difference between revisions
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An empty program is invalid because it gives an [Err: Undefined] error. This behaviour still applies when the program isn't running. Due to this error, a program containing only an empty comment is the smallest possible valid program. |
An empty program is invalid because it gives an [Err: Undefined] error. This behaviour still applies when the program isn't running. Due to this error, a program containing only an empty comment is the smallest possible valid program. |
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<syntaxhighlight lang="scratchscript">//</syntaxhighlight> |
<syntaxhighlight lang="scratchscript">//</syntaxhighlight> |
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=={{header|sed}}== |
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A totally empty program is valid, and just copies the input unmodified. The same effect can be achieved with a single ''b'' command (which might be more convenient when called from the command line). |
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<syntaxhighlight lang="sh">sed "" input.txt |
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# vs |
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sed b input.txt</syntaxhighlight> |
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=={{header|Seed7}}== |
=={{header|Seed7}}== |