reserved-words

问题 I've been working on a personal project and have the below code in a new class that I have created: @property (readonly, getter = isFriend) BOOL friend; There doesn't seem to be anything wrong with it and when I build it, it works compiles absolutely fine but when we look at this line of code in the xcode IDE it looks like My question is why does the xcode IDE seem to think that the word friend is a keyword/reserved-word? 回答1: Presumably because friend is a reserved word in C++. See

问题 This question already has an answer here : Is the list of Python reserved words and builtins available in a library? (1 answer) Closed 2 years ago . Is there a list somewhere (or better yet, a module!) that I can use to check whether a string is a "bad" choice for a variable name, where "bad" is defined as something like "is a keyword or built-in function etc."? I have a script that generates Python classes from a Jinja template (Django models to be precise) and I'd like to fix any field

问题 So an optional parameter expected in the web POST request of an API I'm using is actually a reserved word in python too. So how do I name the param in my method call: example.webrequest(x=1,y=1,z=1,from=1) this fails with a syntax error due to 'from' being a keyword. How can I pass this in in such a way that no syntax error is encountered? 回答1: Pass it as a dict. func(**{'as': 'foo', 'from': 'bar'}) 回答2: args = {'x':1, 'y':1, 'z':1, 'from':1} example.webrequest(**args) // dont use that

问题 I have an interesting problem, and I think I got to the root of it, but I wanted to be sure. I have a link that calls a function called remove(). All browsers except Chrome had no issues with the function. However, the link that is clicked disappeared in Chrome, even when I simplified the function as in the example below. I have seen this question: Can't use "download" as a function name in javascript. In the links, however, I did not see anything about "remove" as a reserved keyword. My

问题 How do I create a table in H2 with a column named GROUP? I saw an example that used something like [*] a while ago, but I can't seem to find it. 回答1: Trailing Underscore Add a trailing underscore : GROUP_ The SQL spec explicitly promises † that no keyword will ever have a trailing underscore. So you are guaranteed that any naming you create with a leading or trailing underscore will never collide with a keyword or reserved word. I name all my columns, constraints, etc. in the database with a

问题 Just a little curiosity at work, here. While working on something dangerous, I got to thinking about the implementations of various compilers and their associated standard libraries. Here's the progression of my thoughts: Some classes of identifiers are reserved for implementation use in C++ and C. A compiler must perform the stages of compilation (preprocessing, compilation, linking) as though they were performed in sequence. The C preprocessor is not aware of the reserved status of

问题 I was writing a Stored Procedure today and Wrote the line: SELECT pv1.Version FROM depl... and the word Version turned blue shown below: so I assumed it was a reserved word, so did some investigating here: Reserved Keywords (TRANSACT-SQL) But could not find the word Version in the list. Is Version a SQL reserved word, and if not why is my word Version displaying blue? I am using SQL Management Studio 2012 回答1: As you rightly noted, Version is not in the official reserved word list. It's just

问题 Are the reserved words in PHP ( final , public , function , etc) case-sensitive? Would it be valid to write: Final Public Function 回答1: I've never had a problem with case-sensitivity as it relates to reserved words. Sometimes I capitalize them, sometimes I don't. Take a look at this list for examples of usage: http://us.php.net/manual/en/reserved.keywords.php 来源： https://stackoverflow.com/questions/13143641/are-the-reserved-words-case-sensitive-in-php

问题 Is it possible in Javascript to determine if a certain string is a reserved language keyword such as switch , if , function , etc.? What I would like to do is escaping reserved identifiers in dynamically generated code in a way that doesn't break on browser-specific extensions. The only thought coming to my mind is using eval in a try-catch block and check for a syntax error. Not sure how to do that though. Any ideas? 回答1: One option would be to do: var reservedWord = false; try { eval('var '

问题 Is there any more complete list than Mozilla's about reserved words? It lacks words like parseFloat , toString , prototype , etc. 回答1: parseFloat , toString and prototype are not reserved words. Just because they sometimes have a special meaning, doesn't mean you can't declare variables with their names; var prototype = "foo"; // no error. The ES5 standard contains a list of reserved words as well, but it should match the list given by MDN: break, do, instanceof, typeof, case, else, new, var,