When creating a JavaScript function with multiple arguments, I am always confronted with this choice: pass a list of arguments vs. pass an options object. For example I am writing a function to map a nodeList to an array: function map(nodeList, callback, thisObject, fromIndex, toIndex){ … } I could instead use this: function map(options){ … … Read more
This code always works, even in different browsers: function fooCheck() { alert(internalFoo()); // We are using internalFoo() here… return internalFoo(); // And here, even though it has not been defined… function internalFoo() { return true; } //…until here! } fooCheck(); I could not find a single reference to why it should work, though. I first … Read more
If I have a utility function foo that I want to be able to call from anywhere inside of my ng-app declaration. Is there someway I can make it globally accessible in my module setup or do I need to add it to the scope in every controller? 5 Answers 5
This question already has answers here: What’s the difference between an argument and a parameter? (36 answers) Closed 9 years ago. I often find myself confused with how the terms ‘arguments’ and ‘parameters’ are used. They seem to be used interchangeably in the programming world. What’s the correct convention for their use? 12 Answers 12
If I have a Bash script like: #!/bin/bash f() { # echo function name, “f” in this case } Is there any way to do this? This could be used in help messages such as printf “Usage: %s: blah blah blah \n” $(basename $0) >&2; Only in this case what I wanted is not $0, … Read more
I have a code snippet written in PHP that pulls a block of text from a database and sends it out to a widget on a webpage. The original block of text can be a lengthy article or a short sentence or two; but for this widget I can’t display more than, say, 200 characters. … Read more
This is meant to be a FAQ question, so please be as complete as possible. The answer is a community answer, so feel free to edit if you think something is missing. This question was discussed and approved on meta. I am using R and tried some.function but I got following error message: Error: could … Read more
The R language has a nifty feature for defining functions that can take a variable number of arguments. For example, the function data.frame takes any number of arguments, and each argument becomes the data for a column in the resulting data table. Example usage: > data.frame(letters=c(“a”, “b”, “c”), numbers=c(1,2,3), notes=c(“do”, “re”, “mi”)) letters numbers notes … Read more
I would like to return two values from a function in two separate variables. For example: def select_choice(): loop = 1 row = 0 while loop == 1: print(”’Choose from the following options?: 1. Row 1 2. Row 2 3. Row 3”’) row = int(input(“Which row would you like to move the card from?: “)) … Read more
I’m writing a Bash script where I need to pass a string containing spaces to a function in my Bash script. For example: #!/bin/bash myFunction { echo $1 echo $2 echo $3 } myFunction “firstString” “second string with spaces” “thirdString” When run, the output I’d expect is: firstString second string with spaces thirdString However, what’s … Read more