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+IsAsciiNum ⇐ ('0'⊸≤∧≤⟜'9')
+IsAlpha ⇐ (('a'⊸≤∧≤⟜'z')∨('A'⊸≤∧≤⟜'Z'))
+
+# based on leah2's function
+ReadInt ⇐ {
+  𝕨 𝕊 𝕩: '-'=⊑𝕩? -𝕨 𝕊 1↓𝕩;
+  𝕨 𝕊 𝕩: (𝕨⊸×+⊣)´∘⌽-⟜'0'𝕩
+}
+ReadDec ⇐ 10⊸ReadInt
+
+SplitOn ⇐ ((⊢ (-1˙)⍟⊣¨ +`∘(1⊸»<⊢))∘(≡¨)⊔⊢)
+SplitAt ← ((⊣≤↕∘≠∘⊢)⊔⊢)
+
+_fix ⇐ {𝕩 𝕊∘⊢⍟≢ 𝔽 𝕩}
+
+ImportBqnLibs ⇐ {•Import 𝕩∾˜"/"∾˜¯1↓1⊑•SH "printenv"‿"BQNLIBS"}
+
+Xor ⇐ (¬⊸∧∨∧⟜¬)