50 lines
1.0 KiB
Plaintext
50 lines
1.0 KiB
Plaintext
A ``switch`` and a chain of ``if``/``else if`` statements is evaluated from top to bottom. At most, only one branch will be executed: the first one with a condition that evaluates to ``true``.
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Therefore, duplicating a condition automatically leads to dead code. Usually, this is due to a copy/paste error. At best, it's simply dead code and at worst, it's a bug that is likely to induce further bugs as the code is maintained, and obviously it could lead to unexpected behavior.
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== Noncompliant Code Example
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----
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if param == 1 {
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openWindow()
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} else if param == 2 {
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closeWindow()
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} else if param == 1 { // Noncompliant
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moveWindowToTheBackground()
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}
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switch i {
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case 1:
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//...
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case 3:
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//...
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case 1: // Noncompliant
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//...
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default:
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// ...
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}
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----
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== Compliant Solution
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----
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if param == 1 {
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openWindow()
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} else if param == 2 {
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closeWindow()
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} else if param == 3 {
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moveWindowToTheBackground()
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}
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switch i {
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case 1:
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//...
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case 3:
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//...
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default:
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// ...
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}
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----
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include::../see.adoc[]
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