https://play.golang.org/p/Qg_uv_inCek contains checks if a string is present in a slice.

check if trimmed input is empty.

Identical to DefaultSigVerificationGasConsumer, but with ed25519 allowed.

removes an element at index i from a slice, will not change order of slice (slow).

removes an element at index i from a slice, will change order of slice (fast).