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Domain-Specific Languages In Python, Part 2
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Per Vognsen
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Matt Mascarenhas
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0:00Recap and set the stage for the day
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0:00Recap and set the stage for the day
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0:00Recap and set the stage for the day
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0:33Review off-stream work factoring out the interpreter's dispatch logic, including the Visitor class
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0:33Review off-stream work factoring out the interpreter's dispatch logic, including the Visitor class
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0:33Review off-stream work factoring out the interpreter's dispatch logic, including the Visitor class
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6:10Review use of the Visitor by Copier
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6:10Review use of the Visitor by Copier
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6:10Review use of the Visitor by Copier
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7:50Review use of the Visitor by Linearizer
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7:50Review use of the Visitor by Linearizer
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7:50Review use of the Visitor by Linearizer
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11:06Print out the result of a linearize() call
11:06Print out the result of a linearize() call
11:06Print out the result of a linearize() call
11:30Run it to see the result of this linearize() call
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11:30Run it to see the result of this linearize() call
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11:30Run it to see the result of this linearize() call
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13:02Review the new compile() function
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13:02Review the new compile() function
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13:02Review the new compile() function
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14:49Run compile() on our test expression
14:49Run compile() on our test expression
14:49Run compile() on our test expression
15:31Run it to see the result of compile()
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15:31Run it to see the result of compile()
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15:31Run it to see the result of compile()
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17:37Review the Measurer class
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17:37Review the Measurer class
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17:37Review the Measurer class
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26:44Q&A
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26:44Q&A
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26:44Q&A
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27:05Introduce XorRemover class and remove_xors() to transform instances of XOR to AND / OR
27:05Introduce XorRemover class and remove_xors() to transform instances of XOR to AND / OR
27:05Introduce XorRemover class and remove_xors() to transform instances of XOR to AND / OR
31:58Test remove_xors()
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31:58Test remove_xors()
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31:58Test remove_xors()
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34:51Demonstrate that both occurrences of (x & ~z) are not independent copies
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34:51Demonstrate that both occurrences of (x & ~z) are not independent copies
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34:51Demonstrate that both occurrences of (x & ~z) are not independent copies
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36:01Targeting different languages easily with this XOR removing approach
36:01Targeting different languages easily with this XOR removing approach
36:01Targeting different languages easily with this XOR removing approach
36:45Determine to work on the final versions of ideas next time
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36:45Determine to work on the final versions of ideas next time
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36:45Determine to work on the final versions of ideas next time
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37:14Set up to do some metaprogramming
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37:14Set up to do some metaprogramming
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37:14Set up to do some metaprogramming
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37:51Review full_adder() with a view to making an n-bit adder
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37:51Review full_adder() with a view to making an n-bit adder
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37:51Review full_adder() with a view to making an n-bit adder
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39:23Introduce make_adder() to make an n-bit adder through metaprogramming
39:23Introduce make_adder() to make an n-bit adder through metaprogramming
39:23Introduce make_adder() to make an n-bit adder through metaprogramming
44:02Test make_adder() on various bit-lengths
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44:02Test make_adder() on various bit-lengths
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44:02Test make_adder() on various bit-lengths
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45:42Compile an 8-bit adder
45:42Compile an 8-bit adder
45:42Compile an 8-bit adder
46:32Run it to see our compiled 8-bit adder
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46:32Run it to see our compiled 8-bit adder
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46:32Run it to see our compiled 8-bit adder
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47:06Introduce compile_adder() including an adder() front-end
47:06Introduce compile_adder() including an adder() front-end
47:06Introduce compile_adder() including an adder() front-end
52:17Test compile_adder()
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52:17Test compile_adder()
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52:17Test compile_adder()
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53:06Tabulate the resulting calculations of our generated adders
53:06Tabulate the resulting calculations of our generated adders
53:06Tabulate the resulting calculations of our generated adders
53:53Run it to see that the 1-bit adder seems good, but the 2-bit adder doesn't, and investigate why
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53:53Run it to see that the 1-bit adder seems good, but the 2-bit adder doesn't, and investigate why
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53:53Run it to see that the 1-bit adder seems good, but the 2-bit adder doesn't, and investigate why
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55:36elavid Maybe do `range(n+1)` on line 339 so we can see the full n+1 bits of z
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55:36elavid Maybe do `range(n+1)` on line 339 so we can see the full n+1 bits of z
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55:36elavid Maybe do `range(n+1)` on line 339 so we can see the full n+1 bits of z
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55:39Enable adder() to output every last bit
55:39Enable adder() to output every last bit
55:39Enable adder() to output every last bit
56:01elavid Yeah, it was printing 1+1=0 earlier because it didn't see the carry.
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56:01elavid Yeah, it was printing 1+1=0 earlier because it didn't see the carry.
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56:01elavid Yeah, it was printing 1+1=0 earlier because it didn't see the carry.
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56:25Check out our generated adder code
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56:25Check out our generated adder code
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56:25Check out our generated adder code
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58:00Hardcode c to 0 in make_adder() and continue to investigate
58:00Hardcode c to 0 in make_adder() and continue to investigate
58:00Hardcode c to 0 in make_adder() and continue to investigate
1:00:40elavid Ohh, the bits in your lists are LSb first, but isn't that loop treating them as MSb first?
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1:00:40elavid Ohh, the bits in your lists are LSb first, but isn't that loop treating them as MSb first?
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1:00:40elavid Ohh, the bits in your lists are LSb first, but isn't that loop treating them as MSb first?
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1:01:10Fix adder() to treat the bits as most-significant bit first
1:01:10Fix adder() to treat the bits as most-significant bit first
1:01:10Fix adder() to treat the bits as most-significant bit first
1:01:44Run it to see that it looks correct
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1:01:44Run it to see that it looks correct
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1:01:44Run it to see that it looks correct
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1:01:58Test compile_adder() on an 8-bit adder
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1:01:58Test compile_adder() on an 8-bit adder
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1:01:58Test compile_adder() on an 8-bit adder
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1:04:40That's probably it for today, with a glimpse into the future diving into the HDL proper
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1:04:40That's probably it for today, with a glimpse into the future diving into the HDL proper
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1:04:40That's probably it for today, with a glimpse into the future diving into the HDL proper
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