This is surprising as javascript var doesn’t respect block scope but functional scope… Sure, but you didn’t use var for the declaration of a in the block scope. You used a function declaration, which does respect block scopes (otherwise it would be completely invalid code, as in ES5 strict mode). It’s permissible in javascript to … Read more
The Variable declarations make it clear that variables are declared. The var keyword is required, it is short and expresses what is done (at the file level everything excluding comments has to start with a keyword, e.g. package, import, const, type, var, func). Like any other block, variable declarations can be grouped like this: var … Read more
Function parameters in Kotlin are basically read-only val‘s inside the function, so z here will always refer to the original object that was passed in. If you need to modify what it points to while your function is running, you’ll have to make a local copy of it at the beginning of the function, and … Read more
You can’t convert an integer directly to a Character instance, but you can go from integer to UnicodeScalar to Character and back again: let startingValue = Int((“A” as UnicodeScalar).value) // 65 for i in 0 ..< 26 { print(Character(UnicodeScalar(i + startingValue))) }
This is the latest scripture from the Xcode 6.3 Beta / Swift 1.2 release notes: let constants have been generalized to no longer require immediate initialization. The new rule is that a let constant must be initialized before use (like a var), and that it may only be initialized: not reassigned or mutated after initialization. … Read more
/var/www/html is just the default root folder of the web server. You can change that to be whatever folder you want by editing your apache.conf file (usually located in /etc/apache/conf) and changing the DocumentRoot attribute (see http://httpd.apache.org/docs/current/mod/core.html#documentroot for info on that) Many hosts don’t let you change these things yourself, so your mileage may vary. … Read more
So it turns out there was probably a bug in the past that when you were adding a Swift file it would add/ask a Bridging header, but it wouldn’t add that line to your project SWIFT_OPTIMIZATION_LEVEL = “-Onone”; which means you’d stay in this state resulting in error: <EXPR>:1:1: error: use of unresolved identifier! I … Read more
When you use var , you are instantiating a variable in the current scope. This will also prevent access of variables named the same in higher scope, within the current scope. In your first example, ‘a’ is being instantiated and set within the function scope. In your second example, ‘a’ is being set outside the … Read more
Try This… <html> <head> <script> function myFunction() { var number = “123”; document.getElementById(“myText”).innerHTML = number; } </script> </head> <body onload=”myFunction()”> <h1>”The value for number is: ” <span id=”myText”></span></h1> </body> </html>
I decided to give Kotlin a shot by just using the “convert java to kotlin” function in IntelliJ. Apparently that set things up wrong. I tried doing the same thing, but after applying the Kotlin Gradle plugin and placing the file in src/kotlin and it all worked. Thanks for the help anyway guys. The code … Read more