dev_app: Develop an Application

In tjpalanca/webtools: Web Server Tools

Description

This is a development utility that is meant to be called interactively to speed up feedback cycles during the development of Apps.

Call dev_app(app_fun) to run the application. During each interval seconds, the application watches the watch directory to see if any source files in the package have changed. If any thing has changed, the package is reloaded, the applicaiton is restarted, and all connected clients are refreshed.

In the global environment, call dev_app_stop() to stop the loop and refreshing, and call dev_app_browse() to open a viewer to the application. dev_app_get() retrieves the current application.

Usage

dev_app(
  app_fun,
  interval = 1L,
  pkg_dir = ".",
  watch = c("R", "inst"),
  browse = FALSE
)

dev_app_stop()

dev_app_browse()

dev_app_get()

Arguments

app_fun	(fun) function to generate an app, must return an App instance.
interval	(num) number of seconds between checks of changes
pkg_dir	(pth) location of the package to be loaded
watch	(dir) director(ies) that is/are monitored for file changes
browse	(flg) whether or not to browse upon startup

Functions

• dev_app_stop: stop the looping

• dev_app_browse: browse the app

• dev_app_get: get the application instance

tjpalanca/webtools documentation built on Dec. 23, 2021, 11 a.m.