How to return a string value from a Bash function
There is no better way I know of. Bash knows only status codes (integers) and strings written to the stdout.
function
PHP mail function doesn’t complete sending of e-mail
Although there are portions of this answer that apply to only to the usage of themail() function itself, many of these troubleshooting steps can be applied to any PHP mailing system. There are a variety of reasons your script appears to not be sending emails. It’s difficult to diagnose these things unless there is an … Read more
How can I get the source code of a Python function?
If the function is from a source file available on the filesystem, then inspect.getsource(foo) might be of help: If foo is defined as: def foo(arg1,arg2): #do something with args a = arg1 + arg2 return a Then: import inspect lines = inspect.getsource(foo) print(lines) Returns: def foo(arg1,arg2): #do something with args a = arg1 + arg2 … Read more
JavaScript variable number of arguments to function
Sure, just use the arguments object. function foo() { for (var i = 0; i < arguments.length; i++) { console.log(arguments[i]); } }
Define a global variable in a JavaScript function
As the others have said, you can use var at global scope (outside of all functions and modules) to declare a global variable: <script> var yourGlobalVariable; function foo() { // … } </script> (Note that that’s only true at global scope. If that code were in a module — <script type=”module”>…</script> — it wouldn’t be at global … Read more
What is a “static” function in C?
static functions are functions that are only visible to other functions in the same file (more precisely the same translation unit). EDIT: For those who thought, that the author of the questions meant a ‘class method’: As the question is tagged C he means a plain old C function. For (C++/Java/…) class methods, static means … Read more
How can I view the source code for a function?
UseMethod(“t”) is telling you that t() is a (S3) generic function that has methods for different object classes. The S3 method dispatch system For S3 classes, you can use the methods function to list the methods for a particular generic function or class. > methods(t) [1] t.data.frame t.default t.ts* Non-visible functions are asterisked > methods(class=”ts”) … Read more
Determine function name from within that function (without using traceback)
import inspect def foo(): print(inspect.stack()[0][3]) print(inspect.stack()[1][3]) # will give the caller of foos name, if something called foo foo() output: foo <module_caller_of_foo>
“Parameter” vs “Argument” [duplicate]
A parameter is the variable which is part of the method’s signature (method declaration). An argument is an expression used when calling the method. Consider the following code: void Foo(int i, float f) { // Do things } void Bar() { int anInt = 1; Foo(anInt, 2.0); } Here i and f are the parameters, … Read more
How do I call a function from another .py file? [duplicate]
First, import function from file.py: from file import function Later, call the function using: function(a, b) Note that file is one of Python’s core modules, so I suggest you change the filename of file.py to something else. Note that if you’re trying to import functions from a.py to a file called b.py, you will need … Read more