Difference between revisions of "Begin-End for Grouping Expressions"
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As illustrated above, you can group several expressions (statements) as the definition of a variable or function simply by separating them by semicolons (<code>;</code>). To group several expressions as a condition or action of <code>If a Then b Else c</code> or <code>While a Do b</code>, or, indeed, anywhere a single expression | As illustrated above, you can group several expressions (statements) as the definition of a variable or function simply by separating them by semicolons (<code>;</code>). To group several expressions as a condition or action of <code>If a Then b Else c</code> or <code>While a Do b</code>, or, indeed, anywhere a single expression | ||
Revision as of 03:32, 29 December 2015
As illustrated above, you can group several expressions (statements) as the definition of a variable or function simply by separating them by semicolons (;). To group several expressions as a condition or action of If a Then b Else c or While a Do b, or, indeed, anywhere a single expression
is valid, you should enclose the expressions between Begin and End, or between parentheses characters ( and ).
The overall value of the group of statements is the value from evaluating the last expression. For example:
(VAR x := 10; x := x/2; x - 2) → 3
Analytica also tolerates a semicolon (;) after the last expression in a group. It still returns the value of the last expression. For example:
(VAR x := 10; x := x/2; x/2;) → 2.5
The statements can be grouped on one line, or over several lines. In fact, Analytica does not care where new-lines, spaces, or tabs occur within an expression or sequence of expressions — as long as they are not within a number or identifier.
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