Std.Http.Safe.changeAllowed

fn

This is a callable function.

What it does

Whether a request may change something.

A method that changes nothing is always allowed. One that does must have

come from this site, and a request that stated nothing is treated as

though it came from elsewhere — an old client and a hostile one look the

same, and only one reading is safe for both.

Read the signature

• The text after the name is the type checked by Pudu.
• Read arrows from left to right: inputs come first, and the final type is returned.
• & borrows a value for this call instead of moving or copying it.
• Names inside [ ] are type arguments, such as the item type held by a collection.
• Result makes success and recoverable failure part of the function's type.