You can easily make it public static final, but that won’t stop people from changing the contents. The best approach is to safely publish the “constant” by: wrapping it in an unmodifiable list using an instance block to populate it Resulting in one neat final declaration with initialization: public static final List<String> list = Collections.unmodifiableList( … Read more
// means that the rest of the line is a comment. Global variables are generally seen as poor design, so the joke is that the best thing to do with global variables is to get rid of them.
With nested scopes, the variable lookups are easy. They occur in a chain starting with locals, through enclosing defs, to module globals, and then builtins. The rule is the first match found wins. Accordingly, you don’t need a “global” declaration for lookups. In contrast, with writes you need to specify which scope to write to. … Read more
What is the utility of having static functions in a file? You can use these functions to provide shared implementation logic to other functions within the same file. Various helper functions specific to a file are good candidates to be declared file-static. How are they different from having global functions in a file? They are … Read more
If you want your function to always be available, without including it, do this: Create your function in a PHP file. In your php.ini file, search for the option auto_prepend_file and add your PHP file to that line, like this: `auto_prepend_file = “/path/to/my_superglobal_function.php”` Or if you write it with a non absolute path, like this: … Read more
The reason is that the line stringvar = “bar” is ambiguous, it could be referring to a global variable, or it could be creating a new local variable called stringvar. In this case, Python defaults to assuming it is a local variable unless the global keyword has already been used. However, the line dictvar[‘key1’] += … Read more
You should do npm install typescript@’>=2.7.2 <2.8.0′. This will install the correct typescript your project needs. Make sure you run this inside your Angular project. On Windows, you should use double quotes instead of single quotes, like so: npm install typescript@”>=2.7.2 <2.8.0″ Otherwise, you’ll get The system cannot find the file specified..
Well, you should only use globals in limited circumstances, but to answer your question: global is potentially marginally faster (it will rarely make a difference). $GLOBALS (not $GLOBAL) is more readable, because every time you see it, you know you are accessing/changing a global variable. This can be crucial in avoiding nasty bugs. Inside the … Read more
Your second example is the closest. The first problem is your variable name, new, which happens to be one of JavaScript’s reserved keywords (and is instead used to construct objects, like new RegExp or new Set). This means that your program will throw a Syntax Error. Also, since the dot (.) is a special character … Read more
The best direct way to fix this is to remove the global declaration from underneath if __name__ == ‘__main__’:. You don’t need it there. Unlike some other languages, an if statement doesn’t introduce a new scope in Python – any variables you assign in that block are global, just as they would be without the … Read more