interpreter

问题 Current assignment needs me to write a program to read a file with instructions in a very tiny and basic programming language (behaves a little like FORTRAN) and execute those instructions. Basically it's a simple interpreter for the language I guess. It's completely linear, with statements all being defined in sequence and it only has String and integer variables. There are 8 keywords and 4 arithmetic operators I would need to find and define if they exist within the source file, and each

问题 Background Consider the following minimal example: When I save the following script and run it from terminal, import time time.sleep(5) raise Exception the code will raise an error after sleeping five seconds, leaving the following traceback. Traceback (most recent call last): File "test/minimal_error.py", line 4, in <module> raise Exception Exception Now, say, I run the script, and during the 5-second-sleep, I add a line in the middle. import time time.sleep(5) a = 1 raise Exception After

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 4 years ago . I'm looking for a .NET library that does a specific task. Say my app has been sent a program (in some script language) and I want my app to run that script. That script could come from an openly hostile individual, but I want to run it anyway. (Like JavaScript in a browser.) var sc = new SecureScript(

问题 In sum: I need to write a List Comprehension in which i refer to list that is being created by the List Comprehension. This might not be something you need to do every day, but i don't think it's unusual either. Maybe there's no answer here--still, please don't tell me i ought to use a for loop. That might be correct, but it's not helpful. The reason is the problem domain: this line of code is part of an ETL module, so performance is relevant, and so is the need to avoid creating a temporary

问题 I just noticed this on my macintosh. Running $ python fires up an interpreter session with the following lines: $ python2.7 Python 2.7.10 (default, Feb 6 2017, 23:53:20) [GCC 4.2.1 Compatible Apple LLVM 8.0.0 (clang-800.0.34)] on darwin Type "help", "copyright", "credits" or "license" for more information. >>> The second line of the starting up text mentions GCC and clang versions. How are these two related to the python interpreter? Given that python is an interpreted language, there should

问题 I wish to run a Tcl script with a different interpreter (OpenSees) from python itself, similar to this question, what would be the most practical way? I've tried tkinter and subprocess routines but as far as I understand i'm running the script in pure Tcl and nothing happens (functions are defined in the OpenSees environment). I've tried calling my Tcl script via tkinter and but I can't for the life of me figure out how to run tcl with another interpreter, what i've tried is: for-test.tcl

问题 1) Is there any freeware which combine tcl editor and compiler (or interpenter)? 2) After opening of the serial connection (COM1) using fconfigure , how can I send via the connection, a string of several words? I need to connect to some HW and I want to be able running a scripts on its CLI. Thanks 回答1: Is there any freeware which combine tcl editor and compiler (or interpenter)? The Tcl source code is thoroughly openly available. Download and build to get an “interpreter” (actually, it

问题 I read the following articles: http://searchcio-midmarket.techtarget.com/definition/just-in-time-compiler http://javarevisited.blogspot.in/2011/12/jre-jvm-jdk-jit-in-java-programming.html I am now really interested in knowing what will happen when I run a class. JIT compiles the byte code again and then ??? Will this compiled code be converted into an .exe by the JVM? 回答1: Like the others said: JIT does not mean the code is compiled to a binary executable (.exe). However, an interesting

问题 I'd like to write a recursively memoizing Scheme interpreter . At any point during evaluation, the interpreter should be able to detect when it receives as arguments a pair of expression and environment that it has previously seen. Plain memoization of eval and apply is inefficient . It would require looking up the arguments in a hash table on every call of eval / apply , which would require walking the entire (possibly big) arguments on hash table matches. For example, assume that the

问题 I work for a company that created firmware for several device using FreeRTOS. Lately our request for new features has surpassed how much work our firmware engineers are capable of, but we can't afford to hire anyone new right now either. Making even tiny changes requires firmware people to go in and modify things at a very low level. I've been looking for some sort of interpreted language project for FreeRTOS that would let us implement new features at a higher level. Ideally I would like to