shunting-yard

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Preserving Parenthesis in Shunting Yard

I\'m working on what is essentially the shunting yard algorithm, but moving infix to prefix instead of RPN[详细]

2023-03-22 17:37 分类：问答
Problems with a shunting yard algorithm

I have successfully implemented a shunting yard algorithm in java. The algorithm itself was simple however I am ha开发者_如何转开发ving trouble with the tokenizer. Currently the algorithm works with e[详细]

2023-02-15 11:34 分类：问答
Common Lisp Error: Expected-type: REAL datum: NIL

I\'m working on actually writing something on my own in Common Lisp for once, implementing the Shunting-yard Algorithm. I thought it went okay, even if it came out rather ugly and if I doubt its Lispy[详细]

2023-02-14 10:42 分类：问答
Trying to write a parser

I\'m trying to parse a syntax using the Shunting Yard (SY) algorithm. The syntax includes the following commands (they\'re are many many others though!)[详细]

2023-02-14 05:40 分类：问答
Postfix to infix with unary/binary operators

I am trying to make a converter from postfix to infix notation and need some help. There is already a question about infix-to-postfix conversion, which gives an example I am failing to convert back. ([详细]

2023-01-11 05:23 分类：问答
Which of the following postfix notations correctly represents infix sum 1+2+3+4?

I am testing an infix-to-postfix-to-infix converter and found some kind of uncertainty. For example, a simple infix sum[详细]

2023-01-10 15:46 分类：问答
Dijkstra’s algorithm and functions

the question is: suppose I have an input function like sin(2-cos(3*A/B)^2.5)+0.756*(C*D+3-B) specified with a BNF, I will parse input using recursive descent algorithm, and then how can I use or chang[详细]

2023-01-01 13:46 分类：问答
Rails: has_many, but also has_one by a different name

Let\'s say a User has many Documents, and a single Document they\'re currently working on. How do I represent this in rails?[详细]

2022-12-18 22:06 分类：问答