Changing a global variable from inside a function PHP

A. Use the global keyword to import from the application scope. $var = “01-01-10”; function checkdate(){ global $var; if(“Condition”){ $var = “01-01-11”; } } checkdate(); B. Use the $GLOBALS array. $var = “01-01-10”; function checkdate(){ if(“Condition”){ $GLOBALS[‘var’] = “01-01-11”; } } checkdate(); C. Pass the variable by reference. $var = “01-01-10”; function checkdate(&$funcVar){ if(“Condition”){ $funcVar … Read more

Static function variables in Swift

I don’t think Swift supports static variable without having it attached to a class/struct. Try declaring a private struct with static variable. func foo() -> Int { struct Holder { static var timesCalled = 0 } Holder.timesCalled += 1 return Holder.timesCalled } 7> foo() $R0: Int = 1 8> foo() $R1: Int = 2 9> … Read more

Delaying function in swift [duplicate]

You can use GCD (in the example with a 10 second delay): Swift 2 let triggerTime = (Int64(NSEC_PER_SEC) * 10) dispatch_after(dispatch_time(DISPATCH_TIME_NOW, triggerTime), dispatch_get_main_queue(), { () -> Void in self.functionToCall() }) Swift 3 and Swift 4 DispatchQueue.main.asyncAfter(deadline: .now() + 10.0, execute: { self.functionToCall() }) Swift 5 or Later DispatchQueue.main.asyncAfter(deadline: .now() + 10.0) { //call any function … Read more

order of evaluation of function parameters

From the C++ standard: The order of evaluation of arguments is unspecified. All side effects of argument expression evaluations take effect before the function is entered. The order of evaluation of the postfix expression and the argument expression list is unspecified. However, your example would only have undefined behavior if the arguments were x>>=2 and … Read more