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42 lines
998 B
Markdown
42 lines
998 B
Markdown
# Function ifElse
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Execute a conditional expression.
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In case of a matrix or array, the test is done element wise, the true and false part can be either a matrix/array with the same size of the condition, or a scalar value.
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## Syntax
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```js
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math.ifElse(condition, trueExpr, falseExpr
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```
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### Parameters
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Parameter | Type | Description
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--------- | ---- | -----------
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`condition` | Number | Boolean | String | Complex | BigNumber | Unit | Matrix | Array | The conditional expression
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`trueExpr` | * | The true expression
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`falseExpr` | * | The false expression
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### Returns
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Type | Description
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---- | -----------
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* | The evaluated return expression
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## Examples
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```js
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var math = mathjs();
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math.ifElse(true, 'yes', 'no'); // returns 'yes'
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math.ifElse([4, 6, 0, -1], true, false); // returns [true, true, false, true]
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```
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