23 lines
547 B
Text
23 lines
547 B
Text
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def tst : IO Unit :=
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do
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let bs := [1, 2, 3].toByteArray;
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IO.println bs;
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let bs := bs.push 4;
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let bs := bs.set! 1 20;
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IO.println bs;
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let bs₁ := bs.set! 2 30;
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IO.println bs₁;
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IO.println bs;
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IO.println bs.size;
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IO.println (bs ++ bs);
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IO.println (bs.extract 1 3);
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pure ()
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#eval tst
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#eval "abcd".hash
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#eval [97, 98, 99, 100].toByteArray.hash
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#eval [0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88].toByteArray.toUInt64LE! == 0x1122334455667788
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#eval [0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88].toByteArray.toUInt64BE! == 0x8877665544332211
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