check-vector-isExistingUrl: Does the input contain an existing (active) URL?

In acidgenomics/goalie: Assertive Check Functions

Does the input contain an existing (active) URL?

Description

Does the input contain an existing (active) URL?

Usage

isExistingUrl(x)

isAnExistingUrl(x)

allAreExistingUrls(x)

Arguments

x

Object.

Details

Supports HTTPS, HTTP, and FTP protocols.

Value

TRUE on success; FALSE on failure, with cause set.

Functions

• isExistingUrl(): Vectorized.

• isAnExistingUrl(): Scalar. Requires a single URL.

• allAreExistingUrls(): Scalar. Checks that all strings are existing URLs.

Note

Updated 2023-10-02.

See Also

• curlGetHeaders(): Amazing function with good timeout control.

• open.connection(): Base method with no dependencies, but prone to hang with poor timeout control.

• RCurl::url.exists(): Seems to be good but adds external dependency.

• urlchecker and curl packages.

• https://github.com/r-lib/urlchecker/blob/main/inst/tools/urltools.R

• https://stackoverflow.com/questions/52911812

• https://stackoverflow.com/a/17620732/3911732

Examples

## TRUE ====
isAnExistingUrl("https://acidgenomics.com/")

## FALSE ====
isAnExistingUrl("https://failwhale.acidgenomics.com/")

acidgenomics/goalie documentation built on Dec. 11, 2023, 11:36 p.m.