Return multiple values from a function in swift
Return a tuple: func getTime() -> (Int, Int, Int) { … return ( hour, minute, second) } Then it’s invoked as: let (hour, minute, second) = getTime() or: let time = getTime() println(“hour: \(time.0)”)
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Eta-expansion between methods and functions with overloaded methods in Scala
Implicit is the correct term, and the section is 6.26.2 in the spec, and this must be a duplicate question (or so one would think; this is stable behavior). The linked question also answers that the expected type must be a function. I’ll go out on a limb and say that when overloaded, applicability is … Read more
Does dart support operator overloading
The chosen answer is no longer valid when you try overloads using the == operator in the new version. Now you need to do this: class MyClass { @override bool operator ==(other) { // compare this to other } } But it’s not safe. other is not specified as a type, Something unexpected may happened. … Read more
Scala Functional Literals with Implicits
scala> val sum2 = (a: Int) => {implicit b: Int => a + b} sum2: (Int) => (Int) => Int = <function1> This will just make b an implicit value for the scope of the function body, so you can call methods that expect an implicit Int. I don’t think you can have implicit arguments … Read more
MsgBox “” vs MsgBox() in VBScript
A callable piece of code (routine) can be a Sub (called for a side effect/what it does) or a Function (called for its return value) or a mixture of both. As the documentation for MsgBox, Displays a message in a dialog box, waits for the user to click a button, and returns a value indicating … Read more
Haskell operator vs function precedence
Firstly, application (whitespace) is the highest precedence “operator”. Secondly, in Haskell, there’s really no distinction between operators and functions, other than that operators are infix by default, while functions aren’t. You can convert functions to infix with backticks 2 `f` x and convert operators to prefix with parens: (+) 2 3 So, your question is … Read more
How can I generate a list of function dependencies in MATLAB?
For newer releases of Matlab (eg 2007 or 2008) you could use the built in functions: mlint dependency report and coverage report Another option is to use Matlab’s profiler. The command is profile, it can also be used to track dependencies. To use profile, you could do >> profile on % turn profiling on >> … Read more
No function matches the given name and argument types
Your function has a couple of smallint parameters. But in the call, you are using numeric literals that are presumed to be type integer. A string literal or string constant (‘123’) is not typed immediately. It remains type “unknown” until assigned or cast explicitly. However, a numeric literal or numeric constant is typed immediately. The … Read more
How to avoid SQL injection in CodeIgniter?
CodeIgniter’s Active Record methods automatically escape queries for you, to prevent sql injection. $this->db->select(‘*’)->from(‘tablename’)->where(‘var’, $val1); $this->db->get(); or $this->db->insert(‘tablename’, array(‘var1’=>$val1, ‘var2’=>$val2)); If you don’t want to use Active Records, you can use query bindings to prevent against injection. $sql=”SELECT * FROM tablename WHERE var = ?”; $this->db->query($sql, array($val1)); Or for inserting you can use the insert_string() … Read more
use onedit() trigger on a specific sheet within google scripts for google sheets
try something like this and see if it works: function onEdit(e) { var activeSheet = e.source.getActiveSheet(); var range = e.range; if (activeSheet.getName() !== “Inventory” || e.value !== “notify”) return; range.setBackgroundColor(‘red’); var productname = range.offset(0, -3).getValue(); var productinventory = range.offset(0, -2).getValue(); var message = “Product variant ” + productname + ” has dropped to ” + … Read more