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Fuzion • Idioms • Idiom # 59: Write to standard error stream

Idiom # 59: Write to standard error stream

See programming-idioms.org:

Code

io.err.println "$x is negative"

What are effects?

Running Example

x := -42

io.err.println "$x is negative"

What are effects?

next: Idiom # 60: Read command line argument