Parrot - 操作

你可以執行各種操作。例如，我們能夠打印出某個暫存器或常量的內容

set I1, 10
print "The contents of register I1 is: "
print I1
print "\n"

上面的指令將生成 暫存器 I1 的內容是：10

我們可以在暫存器上執行數學運算

# Add the contents of I2 to the contents of I1
add I1, I1, I2

# Multiply I2 by I4 and store in I3
mul I3, I2, I4

# Increment I1 by one
inc I1

# Decrement N3 by 1.5
dec N3, 1.5

我們甚至還可以執行一些簡單的字串操作

set S1, "fish"
set S2, "bone"
concat S1, S2       # S1 is now "fishbone"

set S3, "w"
substr S4, S1, 1, 7

concat S3, S4       # S3 is now "wishbone"
length I1, S3       # I1 is now 8