Scope modifiers: Difference between revisions
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=={{header|E}}== |
=={{header|E}}== |
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E has no scope modifiers; all variables (including function definitions) are lexical. When more than one file is involved, all import/export of definitions is handled by explicit return values, parameters, or reified environments. |
E has no scope modifiers; all variables (including function definitions) are lexical. When more than one file is involved, all import/export of definitions is handled by explicit return values, parameters, or reified environments. |
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=={{header|Eiffel}}== |
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Routines (i.e. functions and procedures) always have global scope. |
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Variables have global scope except for: |
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* routine parameters |
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* variables declared local to a routine |
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* the 'Result' of a function |
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A local variable cannot hide (have the same name as): |
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* any routine |
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* a global variable |
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<lang Eiffel>feature |
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some_procedure(int: INTEGER; char: CHARACTER) |
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local |
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r: REAL |
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i: INTEGER |
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do |
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-- r, i and s have scope here |
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-- as well as int and char |
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-- some_procedure and some_function additionally have scope here |
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end |
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s: STRING |
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some_function(int: INTEGER): INTEGER |
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do |
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-- s and Result have scope here |
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-- as well as int (int here differs from the int of some_procedure) |
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-- some_procedure and some_function additionally have scope here |
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end |
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-- s, some_procedure and some_function have scope here</lang> |
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=={{header|Ela}}== |
=={{header|Ela}}== |
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