Name Errors/Static/UnguardedIt

Synopsis The special variable it occurs outside a reducer expression.

Description A Rascal:Reducer is used to reduce all elements in a collection to a sngle value. The special variable it represents the currently reduced value and can be modified inside the reducer. This error is generated when it i used otuside the a reducer.

Remedies:

• You have accidentially used a variable with the name it; rename your variable to something else.
• Place the expression that contains it in a reducer expression.

Examples This is correct way to add all elements in a list:

rascal>(0 | it + n | int n <- [1,5,9] )
int: 15

Using it outside a reducer gives an error:

rascal>it + 3
|stdin:///|(0,2,<1,0>,<1,2>): Use of 'it' special variable is only allowed within reducers

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