For the eighth day in a row, Neophyte Col found himself standing before the Two Great Guards of the temple.  They stood before the large entrance of t

Rust Koans​​​​​

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2024-11-13 20:30:09

For the eighth day in a row, Neophyte Col found himself standing before the Two Great Guards of the temple. They stood before the large entrance of the temple, clad in simple robes. Nevertheless, they were imposing, and feared. He strode toward the first guard, confident, and handed the parchment bearing his program.

The First Guard read through it carefully. This step was but a formality; yesterday, he had only failed to gain the assent of the Second Guard. He was certain he had addressed all outstanding complaints.

The First Guard handed the parchment back to Col. Then, in a blinding motion, slapped Col across the face with his bare hand. In a measured voice, the First Guard spoke to him: "mismatched types: expected &Target, found &<T as Deref>::Target", then fell silent.

Col took his parchment and retreated back to a nearby bench, close to tears. Eight days. It was not as though his program was particularly complicated, and yet he could not convince the Two Great Guards to permit him entry to the temple. He had not had this much difficulty at other temples!

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