Ruby - Sostituire elementi
// Sostituisce "old" con "new" in tutti i file
ruby .i.bak -pe 'sub "old", "new"' *
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Position-based substitution in arrays
// Replace array values based on their row and column position
// This is an alternative to using for loops to test each position
// This is an alternative to using for loops to test each position
a <- array(0, dim=c(10, 10)) a[row(a) <= col(a)*2] <- 1
