keepTrying: Keep trying to assign the result of a call to a specified...

In Thie1e/IFC-scraper: Scraping The IFC's Project Database

Description

This function tries a certain number of time (maxTries) to assign the result of 'call' to an object called 'target' in the parent frame. Useful for calls that may fail sometimes, e.g. downloading.

Usage

keepTrying(target, call, maxTries = 5, timeout = 5, noTermination = F,
  silent = F)

Arguments

target	(character) The name under which the result of call should be stored
call	(character) The call as a character string
maxTries	Try this number of times at maximum
timeout	The timeout between tries
noTermination	If False (default False) the try-error will be saved in the object of name 'target'. Otherwise the function throws an error via stop() which will interrupt a function that keepTrying is running inside of.

Examples

> keepTrying("theAnswer", "2 + 40")
> theAnswer
42

> keepTrying("thisFails", "2 * 'abc'", maxTries = 2, noTermination = T)
Error in 2 * "abc" : non-numeric argument to binary operator
Trying again in 5 sec.
Error in 2 * "abc" : non-numeric argument to binary operator
> thisFails
[1] "Error in 2 * \"abc\" : non-numeric argument to binary operator\n"
attr(,"class")
[1] "try-error"
attr(,"condition")
<simpleError in 2 * "abc": non-numeric argument to binary operator>

Thie1e/IFC-scraper documentation built on May 9, 2019, 4:40 p.m.