Documentation

Init.Data.String.Lemmas

@[deprecated String.toList_inj (since := "2025-10-30")]
theorem String.data_eq_of_eq {a b : String} (h : a = b) :
@[deprecated String.toList_inj (since := "2025-10-30")]
theorem String.ne_of_data_ne {a b : String} (h : a.toList ≠ b.toList) :
a ≠ b
@[simp]
theorem String.not_le {a b : String} :
¬a ≤ b ↔ b < a
@[simp]
theorem String.not_lt {a b : String} :
¬a < b ↔ b ≤ a
@[simp]
theorem String.le_refl (a : String) :
a ≤ a
@[simp]
theorem String.lt_irrefl (a : String) :
¬a < a
theorem String.le_trans {a b c : String} :
a ≤ b → b ≤ c → a ≤ c
theorem String.lt_trans {a b c : String} :
a < b → b < c → a < c
theorem String.le_total (a b : String) :
a ≤ b ∨ b ≤ a
theorem String.le_antisymm {a b : String} :
a ≤ b → b ≤ a → a = b
theorem String.lt_asymm {a b : String} (h : a < b) :
¬b < a
theorem String.ne_of_lt {a b : String} (h : a < b) :
a ≠ b