assert.surface | R Documentation |
Stop unless surf is an fs.surface
assert.surface(surface, param_name = "surface")
param_name |
character string, used in stop message to identify the parameter. |
surf |
fs.surface instance or anything else |
Called for the side effect of stopping if surf is not an fs.surface instance.
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.