Can someone give the defenition for variables in MIT app inventor?
Answers
Answer:
Variable names in an app must be unique. App Inventor will not let you define two variables in the same app with the same name. When you create a variable, App Inventor will automatically create two associated blocks, and place them in the My Definitions drawer: The global block gets the value of the variable.
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Answer:
Creates a value that can be changed while an app is running, and gives that value a name. Variables are global in scope, which means you can refer to them from any code in the app, including from within procedures.
When you create a new variable block, App Inventor chooses a unique name automatically. You can click on the name and type to change it. Variable names in an app must be unique. App Inventor will not let you define two variables in the same app with the same name.
When you create a variable, App Inventor will automatically create two associated blocks, and place them in the My Definitions drawer:
The global block gets the value of the variable.
The set global block changes the value of the variable.
Explanation:
You can rename a variable at any time while you are building the app, and the associated blocks will be renamed automatically.
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This block provides a "dummy socket" for fitting a block that has a plug on its left into a place where there is no socket, such as one of the sequence of blocks in the do part of a procedure or an if block. The block you fit in will be run, but its returned result will be ignored. This can be useful if you define a procedure that returns a result, but want to call it in a context that does not accept a result.
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