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sai jayanth kashyap
3,293 Pointshaving problem with append command
when i tried to apply append command with an array in my playground, it shows an error saying cannot invoke append command with an argument list of type "string". This Is what i have tried in my playground. var name = "sai,jayanth,kashyap,naresh,pavan,thony,chaitanya,anand" var rollNo = "1,2,3,4,5,6,7" name += ",leela" name.append("sai kiran")
2 Answers
Luca Argenziano
16,416 PointsHi Sai, I think I can help you. You said you wanted to try the append method on an array, but actually your "name" variable is only a string, not an array. A string, since it's only a variable, has some properties but no methods available. To make your "name" an array, you must declare it as follows:
var names: [string] = ["sai", "jayanth", "kashyap", "naresh", "pavan"];
This time you can call every methods available for arrays, like:
names.count;
names.append("Luca");
Note also that since an array is a collection of variables, it's common practice to use a plural name to declare it. So you could say: "I want to add a name to my names array".
Hope it can help you ;)
Bill Merickel
11,420 PointsThis is the Swift language. Your link contains a document for the Python language, which is completely different.
Jennifer Nordell
Treehouse TeacherWoops! hehehe I'm tired. Boy, talk about confusing your languages! But still what you need is some sort of string concatenation. According to Apple Developers documentation on Swift you can use the append method for adding a character but to add another string you should use concatenation.
Obviously, I removed my previous answer :)