When you use a command substitution (i.e., the $(…) construct), you are creating a subshell. Subshells inherit variables from their parent shells, but this only works one way: A subshell cannot modify the environment of its parent shell. Your variable e is set within a subshell, but not the parent shell. There are two ways to … Read more
How about just using the built-in types like this: config = { “mysql”: { “user”: “root”, “pass”: “secret”, “tables”: { “users”: “tb_users” } # etc } } You’d access the values as follows: config[“mysql”][“tables”][“users”] If you are willing to sacrifice the potential to compute expressions inside your config tree, you could use YAML and end … Read more
You need to declare the variable before you include the helpers.js file. Simply create a script tag above the include for helpers.js and define it there. <script type=”text/javascript” > var myFunctionTag = false; </script> <script type=”text/javascript” src=”https://stackoverflow.com/questions/2932782/js/helpers.js”></script> … <script type=”text/javascript” > // rest of your code, which may depend on helpers.js </script>
From the official Swift programming guide: Global variables are variables that are defined outside of any function, method, closure, or type context. Global constants and variables are always computed lazily. You can define it in any file and can access it in current module anywhere. So you can define it somewhere in the file outside … Read more
You need to declare the variables outside the function: Public iRaw As Integer Public iColumn As Integer Function find_results_idle() iRaw = 1 iColumn = 1
import sys thismodule = sys.modules[__name__] setattr(thismodule, name, value) or, without using setattr (which breaks the letter of the question but satisfies the same practical purposes;-): globals()[name] = value Note: at module scope, the latter is equivalent to: vars()[name] = value which is a bit more concise, but doesn’t work from within a function (vars() gives … Read more
This is a pretty famous difference between Windows and Unix-like systems. No matter what: Each process has its own address space, meaning that there is never any memory being shared between processes (unless you use some inter-process communication library or extensions). The One Definition Rule (ODR) still applies, meaning that you can only have one … Read more
As Christian’s answer with assign() shows, there is a way to assign in the global environment. A simpler, shorter (but not better … stick with assign) way is to use the <<- operator, ie a <<- “new” inside the function.
Global variables are almost never a good thing (maybe an exception or two out there…). In this case, it looks like you really just want to export your “name” variable. E.g., // module.js var name = “foobar”; // export it exports.name = name; Then, in main.js… //main.js // get a reference to your required module … Read more
It’s possible, but heap allocation is not allowed directly. Heap allocation is performed at runtime. Here are a few examples: static SOME_INT: i32 = 5; static SOME_STR: &’static str = “A static string”; static SOME_STRUCT: MyStruct = MyStruct { number: 10, string: “Some string”, }; static mut db: Option<sqlite::Connection> = None; fn main() { println!(“{}”, … Read more