4 ms·

goto to a line number is not the very nice... adding a new line will mess up all the previous gotos

seisvelas 7y ago
You're getting downvotes from the people who don't know that you are 100% right: goto is usually with labels, not line number, for exactly the reason you point out. This Gist is still super cool, though.
- pjc50 7y ago
  Further back, BASIC lets you go to a line number .. but the line numbers are explicit and not required to be consecutive. In fact you'd routinely leave holes in the numbering in order to insert an extra line without breaking it. Better systems offered a "renumber" function. Others .. didn't.
  - seisvelas 7y ago
    >BASIC lets you go to a line number QBasic let you use either a line number or a label, I believe they only kept line numbers after labels were introduced for backwards compatibility. I know I'm veering way off topic but for as much disdain as BASICs receive, I really do feel like coding up a simple game was much easier for teenage-me in QBasic than it was in Python with pygame, for whatever reason.
    - pjc50 7y ago
      I think a lot of people have reported having that experience, and I think it's been deeply under-investigated by programming language researchers.
      - jbay808 7y ago
        My first programming experience was QBASIC. Even if it's not a good programming pattern, I think GOTO is a great way to let a novice programmer "discover" the idea of loops and functions for themselves. Although it's error prone, it's still very intuitive for someone with no programming background.
    - sitkack 6y ago
      QBasic is actually a really awesome language, I am bummed I didn't embrace it like I should have. I ended up going C/C++ ... Perl ... Python. I wasted a lot of time with C/C++, if I had immersed myself in QBasic, I would have better actualized myself.
xashor 7y ago
LABEL = sys._getframe().f_lineno print(1) j(LABEL)
- CivBase 7y ago
  Past labels are easy, but what about future labels? print(1) goto('MYLABEL') print(2) label('MYLABEL') print(3) Or better yet... for x in range(10): for y in range(10): if x == 5 and y == 5: print(x, y) goto('MULTIBREAK') label('MULTIBREAK')

You're getting downvotes from the people who don't know that you are 100% right: goto is usually with labels, not line number, for exactly the reason you point out. This Gist is still super cool, though.

pjc50 7y ago
Further back, BASIC lets you go to a line number .. but the line numbers are explicit and not required to be consecutive. In fact you'd routinely leave holes in the numbering in order to insert an extra line without breaking it. Better systems offered a "renumber" function. Others .. didn't.
- seisvelas 7y ago
  >BASIC lets you go to a line number QBasic let you use either a line number or a label, I believe they only kept line numbers after labels were introduced for backwards compatibility. I know I'm veering way off topic but for as much disdain as BASICs receive, I really do feel like coding up a simple game was much easier for teenage-me in QBasic than it was in Python with pygame, for whatever reason.
  - pjc50 7y ago
    I think a lot of people have reported having that experience, and I think it's been deeply under-investigated by programming language researchers.
    - jbay808 7y ago
      My first programming experience was QBASIC. Even if it's not a good programming pattern, I think GOTO is a great way to let a novice programmer "discover" the idea of loops and functions for themselves. Although it's error prone, it's still very intuitive for someone with no programming background.
  - sitkack 6y ago
    QBasic is actually a really awesome language, I am bummed I didn't embrace it like I should have. I ended up going C/C++ ... Perl ... Python. I wasted a lot of time with C/C++, if I had immersed myself in QBasic, I would have better actualized myself.

xashor 7y ago

LABEL = sys._getframe().f_lineno print(1) j(LABEL)

CivBase 7y ago
Past labels are easy, but what about future labels? print(1) goto('MYLABEL') print(2) label('MYLABEL') print(3) Or better yet... for x in range(10): for y in range(10): if x == 5 and y == 5: print(x, y) goto('MULTIBREAK') label('MULTIBREAK')