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    @stdlib/utils-try-catch
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    0.0.7 • Public • Published

    trycatch

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    If a function does not throw, return the function return value; otherwise, return y.

    Installation

    npm install @stdlib/utils-try-catch

    Usage

    var trycatch = require( '@stdlib/utils-try-catch' );

    trycatch( x, y )

    If a function x does not throw, returns the return value of x; otherwise, returns y.

    function x1() {
        return 1.0;
    }
    
    var z = trycatch( x1, -1.0 );
    // returns 1.0
    
    function x2() {
        throw new Error( 'beep' );
    }
    
    z = trycatch( x2, -1.0 );
    // returns -1.0

    Examples

    var randu = require( '@stdlib/random-base-randu' );
    var trycatch = require( '@stdlib/utils-try-catch' );
    
    var z;
    var i;
    
    function x() {
        if ( randu() < 0.9 ) {
            throw new Error( 'BOOP' );
        }
        return 'BOOP';
    }
    
    for ( i = 0; i < 100; i++ ) {
        z = trycatch( x, 'beep' );
        console.log( z );
    }

    See Also

    • @stdlib/utils/async/try-catch: if a function does not return an error, invoke a callback with the function result; otherwise, invoke a callback with a value y.
    • @stdlib/utils/try-then: if a function does not throw, return the function return value; otherwise, return the return value of a second function.

    Notice

    This package is part of stdlib, a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.

    For more information on the project, filing bug reports and feature requests, and guidance on how to develop stdlib, see the main project repository.

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    License

    See LICENSE.

    Copyright

    Copyright © 2016-2022. The Stdlib Authors.

    Install

    npm i @stdlib/utils-try-catch

    Homepage

    stdlib.io

    DownloadsWeekly Downloads

    21

    Version

    0.0.7

    License

    Apache-2.0

    Unpacked Size

    37.9 kB

    Total Files

    9

    Last publish

    Collaborators

    • stdlib-bot
    • kgryte
    • planeshifter
    • rreusser