Conditional structures: Difference between revisions
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<syntaxhighlight lang="vbnet">Dim result As String = If("pants" = "glasses", "passed", "failed") ' type is inferred</syntaxhighlight> |
<syntaxhighlight lang="vbnet">Dim result As String = If("pants" = "glasses", "passed", "failed") ' type is inferred</syntaxhighlight> |
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=={{header|Vlang}}== |
=={{header|V (Vlang)}}== |
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If and match are the general purpose conditional structures in Vlang, although the language certainly contains other conditional elements. |
If and match are the general purpose conditional structures in V (Vlang), although the language certainly contains other conditional elements. |
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===If=== |
===If=== |
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Simplest usage is, |
Simplest usage is, |
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<syntaxhighlight lang="vlang">if boolean_expression { |
<syntaxhighlight lang="v (vlang)">if boolean_expression { |
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statements |
statements |
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}</syntaxhighlight> |
}</syntaxhighlight> |
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The braces are required, even around a single statement. |
The braces are required, even around a single statement. |
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<syntaxhighlight lang="vlang">if boolean_expression { |
<syntaxhighlight lang="v (vlang)">if boolean_expression { |
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statements |
statements |
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} else { |
} else { |
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}</syntaxhighlight> |
}</syntaxhighlight> |
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Braces are required around else clauses, as above, unless the statement of the else clause is another if statement. In this case the statements are chained like this, |
Braces are required around else clauses, as above, unless the statement of the else clause is another if statement. In this case the statements are chained like this, |
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<syntaxhighlight lang="vlang">if boolean_expression1 { |
<syntaxhighlight lang="v (vlang)">if boolean_expression1 { |
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statements |
statements |
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} else if boolean_expression2 { |
} else if boolean_expression2 { |
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===Match=== |
===Match=== |
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Simple usage is, |
Simple usage is, |
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<syntaxhighlight lang="vlang">match true { |
<syntaxhighlight lang="v (vlang)">match true { |
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boolean_expression1 { |
boolean_expression1 { |
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statements |
statements |
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Match can also switch on the value of an expression, as in, |
Match can also switch on the value of an expression, as in, |
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<syntaxhighlight lang="vlang">switch expression_of_any_type { |
<syntaxhighlight lang="v (vlang)">switch expression_of_any_type { |
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value1 { |
value1 { |
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statements |
statements |
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