# Couple
⍤⤙≍ [1 2] [⍜⊟∘] 1 2
⍤⤙≍ [1 2] [⍜˜⊟∘] 1 2
⍤⤙≍ [2 1] [⍜˜⊟⍆] 1 2
⍤⤙≍ [2 1] [⍜˜⊟⍆] 2 1
# Take and drop
⍤⤙≍ [10 20 3 4 5] ⍜(↙2|×10) +1⇡5
⍤⤙≍ [1 2 30 40 50] ⍜(↘2|×10) +1⇡5
⍤⤙≍ [1 2 3 4 5] ⍜(↘5|×10) +1⇡5
⍤⤙≍ [1 2 3 4 5] ⍜(↘8|×10) +1⇡5
⍤⤙≍ [1 2 30 40 5] ⍜(↙2↘2|×10) +1⇡5
⍤⤙≍ [0_10_2 30_40_5 60_70_8] ⍜↙(×10) ∞_2 ↯3_3⇡9
⍤⤙≍ ⟜⍜(↘∞)∘ [1 2 3]
⍤⤙≍ [0 1 2 3 5 4] ⍜⊙↘⊂ 5 4 ⇡5
⍤⤙≍ [0 1 2 3 4 5] ⍜⊙↘⊂ 5 5 ⇡5
# Select
⍤⤙≍ [1 20 3 4 50] ⍜(⊏1_4|×10) +1⇡5
⍤⤙≍ [0_1_2 30_40_50 6_7_8] ⍜(⊏1|×10) ↯3_3⇡9
⍤⤙≍ [0_1_2 30_40_50 6_7_8] ⍜(⊏[1]|×10) ↯3_3⇡9
⍤⤙≍ [0_1_2 30_40_50 60_70_80] ⍜(⊏1_2|×10) ↯3_3⇡9
⍤⤙≍ ¤¤¤¤¤¤20 ⍜(⊏0|×10) ¤¤¤¤¤¤2
⍤⤙≍ [2 4 3] ⍜⊏(×2) 0_1_0_1 [1 2 3]
⍤⤙≍ [0 10 20 3 4 5 6 7 8] ⍜⊏(×10) 1_2_1 ⇡9
⍤⤙≍ [10 20 3 4 5 6 7 8 9] ⍜⊏(×10) 1_1_0 +1⇡9
⍤⤙≍ [1 20 3 40 5] ⍜⊏(×10) 1_3_3 1_2_3_4_5
⍤⤙≍ [1 5 2 3] ⍜⊏(⊂5) 1 [1 2 3]
⍤⤙≍ [1 5 6 2 3] ⍜⊏(⊂5_6) 1 [1 2 3]
⍤⤙≍ [1 10 2 3 10 4 5] ⍜⊏≡(⊂10) 1_3 [1 2 3 4 5]
⍤⤙≍ [1 5 3] ⍜⊏⋅5 1 [1 2 3]
⍤⤙≍ [1 5 3] ⍜⊏⋅5 [1] [1 2 3]
⍤⤙≍ [0 2 0 4] ⍜⊏⋅0 [0 2] [1 2 3 4]
⍤⤙≍ [0_0 3_4 0_0 7_8] ⍜⊏⋅0 [0 2] [1_2 3_4 5_6 7_8]
⍤⤙≍ [10_20 3_4 10_20 7_8] ⍜⊏⋅10_20 [0 2] [1_2 3_4 5_6 7_8]
⍤⤙≍ [1 10 2 3 30 4] ⍜⊏≡(⊟⟜(×10)) [0 2] [1 2 3 4]
⍤⤙≍ [1_2 10_20 3_4 5_6 50_60 7_8] ⍜⊏≡(⊟⟜(×10)) [0 2] [1_2 3_4 5_6 7_8]
⍤⤙≍ [1 20 30] ⍜⬚10⊏(×10) [1 2 3] [1 2 3]
⍤⤙≍ 5 ⍜⬚10⊏(×10) 1 5
⍤⤙≍ 5 ⍜⊏∘ [0] 5
# Keep
⍤⤙≍ [5 5 5] ⍜▽⋅5 [1] [1 2 3]
⍤⤙≍ [5 2 5] ⍜▽⋅5 [1 0] [1 2 3]
⍤⤙≍ [5 2 3] ⍜▽⋅5 [1 0 0] [1 2 3]
⍤⤙≍ [0 2 0 4] ⍜▽⋅0 [1 0 1 0] [1 2 3 4]
⍤⤙≍ [10_20 3_4 10_20 7_8] ⍜▽⋅10_20 [1 0 1 0] [1_2 3_4 5_6 7_8]
⍤⤙≍ [10 2 30 4 50] ⍜▽(×10) ⊸◿2 [1 2 3 4 5]
⍤⤙≍ [0 9 2 7 4 5 6 3 8 1] ⍜⬚0_1▽⇌ [] ⇡10
⍤⤙≍ [1 7 18] ⍜▽\+ 5 [1 2 3]
⍤⤙≍ ["a bc" "b cd" "c de" "d ef"] ⍜▽(⊞+⇡4) ⊸≠@ "a bc"
⍤⤙≍ [1_5_2 3_5_4] ⍜▽⋅[1_2 3_4] 1_0_1 1_5_3
⍤⤙≍ {⊸(⇡⧻)}⟜{°⊏} "Hello"
⍤⤙≍ ⟜⍜°⊏⊙∘ "Hello"
⍤⤙≍ "olleH" ⍜°⊏⇌ "Hello"
⍤⤙≍ ⟜⍜°⊏∩⇌ "Hello"
# Pick
⍤⤙≍ [1 2 30 4 5] ⍜(⊡2|×10) +1⇡5
⍤⤙≍ [0_1_2 3_40_5 6_7_8] ⍜(⊡1_1|×10) ↯3_3⇡9
⍤⤙≍ [0_1_20 30_4_5 6_7_8] ⍜⊡(×10) [1_0 0_2] ↯3_3⇡9
⍤⤙≍ [1_2_3 4_50_6 7_8_90] ⍜⊡(×10) [1_1 2_2 1_1] +1↯3_3⇡9
⍤⤙≍ [10_2_3 4_50_6 7_8_9] ⍜⊡(×10) [1_1 1_1 0_0] +1↯3_3⇡9
⍤⤙≍ [1_5_3 3_4_2] [⍜∩⊡˜⊙∘ 1 1_2_3 2 3_4_5]
⍤⤙≍ ⟜(⍜⬚1⊡¬ 0_4) ×0°△3_3
⍤⤙≍ ⟜(⍜⬚1⊡¬ [0_4 3_2]) ×0°△3_3
⍤⤙≍ [5 2 3] ⍜⊡⋅5 ¯3 [1 2 3]
# Filled pick
⍤⤙≍ [1 2 5] ⍜⬚0⊡⋅5 2 [1 2 3]
⍤⤙≍ [1 2 3] ⍜⬚0⊡⋅5 4 [1 2 3]
⍤⤙≍ [1 2 3] ⍜⬚0⊡⋅5 ¯3 [1 2 3]
⍤⤙≍ [1 2 3] ⍜⬚0⊡∘ ¯3 [1 2 3]
⍤⤙≍ [1 2 5] ⬚0⍜⊡⋅5 2 [1 2 3]
⍤⤙≍ [1 2 3] ⬚0⍜⊡⋅5 4 [1 2 3]
⍤⤙≍ [1 2 3] ⬚0⍜⊡⋅5 ¯3 [1 2 3]
⍤⤙≍ [1 2 3] ⬚0⍜⊡∘ ¯3 [1 2 3]
# Shape
⍤⤙≍ [4 3 2 1] ⍜△¯ [1 2 3 4]
⍤⤙≍ [4_3 2_1] ⍜△¯ [1_2 3_4]
⍤⤙≍ [0_1_0_1 2_3_2_3 0_1_0_1] °⊸△ 3_4 °△2_2
⍤⤙≍ ↯2_0_1 [] °⊸△ 2_0_1 []
⍜△(×2) °△2_2_2
⍤⤙≍ [[0_1_0_1 2_3_2_3 0_1_0_1 2_3_2_3]
[4_5_4_5 6_7_6_7 4_5_4_5 6_7_6_7]
[0_1_0_1 2_3_2_3 0_1_0_1 2_3_2_3]
[4_5_4_5 6_7_6_7 4_5_4_5 6_7_6_7]]
⍤⤙≍ [0_1_0 2_3_2 0_1_0] °⊸△ 3_3 °△2_2_2
⍤⤙≍ ↯2[0_1_0 2_3_2 0_1_0] °⊸△ 2_3_3 °△2_2
⍤⤙≍ [0 1 0 1 0] °⊸△ 5 °△2_2
⍤⤙≍ [5_5_5 5_5_5] °⊸△ 2_3 5
⍤⤙≍ [5 5 5 5 5] °⊸△ 5 5
⍤⤙≍ 1 °⊸△ [] 1_2_3
⍤⤙≍ [2_3_2 0_1_0 2_3_2] °⊸△ ¯3_3 °△2_2
⍤⤙≍ [[0_1_2 3_4_5 6_7_8 0_1_2]] °⊸△ ∞_4_∞ °△3_3
⍤⤙≍ [0 1 2] °⊸△ ∞ °△2_3
⍤⤙≍ [0_1_∞_∞ 2_3_∞_∞ ∞_∞_∞_∞] ⬚∞°⊸△ 3_4 °△2_2
⍤⤙≍ [∞_∞_∞ 0_1_∞ 2_3_∞] ⬚∞°⊸△ ¯3_3 °△2_2
⍤⤙≍ [∞_∞ ∞_∞ ∞_∞] ⬚∞°⊸△ 3_2 []
# Subscripted deshape
⍤⤙≍ ⟜⍜♭₁∘ ↯2_3_4⇡24
⍤⤙≍ ⟜⍜♭₂∘ ↯2_3_4⇡24
⍤⤙≍ ⟜⍜♭₃∘ ↯2_3_4⇡24
⍤⤙≍ ⟜⍜♭₄∘ ↯2_3_4⇡24
⍤⤙≍ ⟜⍜♭₅∘ ↯2_3_4⇡24
⍤⤙≍ ⟜⍜♭₀∘ ↯2_3_4⇡24
⍤⤙≍ ⟜⍜♭₋₁∘ ↯2_3_4⇡24
⍤⤙≍ ⟜⍜♭₋₂∘ ↯2_3_4⇡24
⍤⤙≍ □↯2_3_4⇡24 ⍜♭₄□ ↯2_3_4⇡24
⍤⤙≍ □↯2_∞_4⇡24 ⍜♭₂□ ↯2_3_4⇡24
⍤⤙≍ ↯2_3≡□↯∞_4⇡24 ⍜♭₂≡□ ↯2_3_4⇡24
⍤⤙≍ ≡□↯2_3_4⇡24 ⍜♭₃≡□ ↯2_3_4⇡24
⍤⤙≍ [10_2 3_4] ⍜♭₀×₁₀ [1_2 3_4]
# Reshape
⍤⤙≍ 3_4_5_0_1_2 ⍜↯⇌ 2_3 ⇡6
⍤⤙≍ 3_0_1 ⬚∘⍜↯⇌ 0 2_∞ [1 2 3]
# Reverse
⍤⤙≍ {5 [1 2 3 4]} {⍜⇌°⊂ [1 2 3 4 5]}
⍤⤙≍ {[4 5] [1 2 3]} {⍜⇌(⊃↙↘2) [1 2 3 4 5]}
⍤⤙≍ {[4 3] [2 1]} {⍜⇌°⊟ [1_2 3_4]}
# Rotate
⍤⤙≍ [1 2 3 4] ⍜(↻1)∘ [1 2 3 4]
⍤⤙≍ [1 2 3 4] ⍜↻∘ 1 [1 2 3 4]
⍤⤙≍ {2 [1 3 4]} {⍜↻°⊂} 1 [1 2 3 4]
⍤⤙≍ {4_5_3 1_2_6} {⍜↻(°⊟↯2_∞)} 2 [1 2 3 4 5 6]
⍤⤙≍ {4 3_5 [0_1_2 6_7_8]} {⍜↻(°⊂°⊂)} 1_1 °△3_3
⍤⤙≍ ˙⊟⟜(⍜↻∘ ≡¤1_2) "abc"
⍤⤙≍ ˙□₂˙⊟⟜{⍜↻⟜∘ ≡¤1_2} "abc"
⍤⤙≍ ⊃(↯⧻)⍜↻∘ °△4_2 °△5_5
# Transpose
⍤⤙≍ {
[0_1_2 6_7_8 12_13_14]
[3_4_5 9_10_11 15_16_17]
} {⍜⍉°⊟} °△3_2_3
⍤⤙≍ {
[0_3 6_9 12_15]
[[1_2 4_5] [7_8 10_11] [13_14 16_17]]
} {⍜°⍉°⊂} °△3_2_3
⍤⤙≍ ⊃{˜⊙∘}{⍜∩°⍉˜⊙∘} °△2_3 °△3_4
# Where
⍤⤙≍ [0_0_0 0_0_1 0_0_0] ⍜⊙⊚⊂ 1_2 ↯⟜⊚3
# Un bits
⍤⤙≍ [1 1 0] ⍜°⋯(-2) [1 0 1]
⍤⤙≍ [1_1_0 1_0_0] ⍜°⋯(-2) [1_0_1 1_1_0]
# Both (un)couple
⍤⤙≍ [2_1 3_4] [⍜∩°⊟˜⊙∘ 1_2 3_4]
⍤⤙≍ [6 20] ⍜∩°⊟∩× 2_3 4_5
⍤⤙≍ {1_2 3_4} [⍜◇⊟∘] □1_2 □3_4
⍤⤙≍ {□5 □1 2} {⍜∩°□5} 1 2
⍤⤙≍ [6_5 4_3 2_1] ⍜♭⇌ [1_2 3_4 5_6]
⍤⤙≍ [1_2_3] ⍜△(⊂1) [1 2 3]
# Dip
⍤⤙≍ [1_3_3 3_3_2] [˙⍜⊙⇌∩\↥] [1 3 2]
# Both
⍤⤙≍ [1 2 3 4] [⍜∩⊟∘ 1 2 3 4]
⍤⤙≍ [3 4 1 2] [⍜∩⊟˜⊙∘ 1 2 3 4]
⍤⤙≍ [1 4 5 2 3] [⍜⊙∩⊟⊙˜⊙∘] 1 2 3 4 5
⍤⤙≍ [3 4 1 2] [⍜∩{⊙∘}˜⊙∘ 1 2 3 4]
⍤⤙≍ [3 4 1 2] [⍜∩({⊙∘})˜⊙∘ 1 2 3 4]
⍤⤙≍ [1 2 3 4] [⍜∩{⊙∘}∘ 1 2 3 4]
⍤⤙≍ [1 2 3 4] [⍜∩({⊙∘})∘ 1 2 3 4]
⍤⤙≍ 5 ⍜∩˙×+ 3 4
⍤⤙≍ {6 5} [⍜∩°□˜⊙∘ □5 □6]
⍤⤙≍ [9 9 5] ⍜⊡(⍜∩×↥∩⌟⊙∘) 2 ↯3 9 ¯1 5
⍤⤙≍ 0 ⧻ {⍜(∩(|1 ◌ °img&frab))∩∘ ⟜∘"site/favicon.ico"}
⍤⤙≍ [29 39] [⍜∩⌞+∩×₁₀ 1 2 3]
⍤⤙≍ [39 48] [⍜∩⌟+∩×₁₀ 1 2 3]
⍤⤙≍ [2_13 4_15] ⊟ ⍜⊙∩⌞⊡∩⌞+ 10 1 2_3 4_5
⍤⤙≍ [0_7_2 5_4_3 6_1_8] ⍜(▽∩♭)⇌ ⊸◿2 °△3_3
⍤⤙≍ {"15" "120"} {⍜∩₃⋕⊃(++|××)} "4" "5" "6"
⍤⤙≍ [¯4 ¯5 ¯6] [⍜∩₃⌞+∩₃¯] 1 2 3 4
⍤⤙≍ [¯5 ¯6] [⍜∩₃⌞+⋅∩¯] 1 2 3 4
⍤⤙≍ [7_2_3 8_5_6] ⊟ ⍜∩⌞⊏∩◌ 0 1_2_3 4_5_6 7 8
# On
⍤⤙≍ [3 5] [⍜⟜×∘ 3 5]
⍤⤙≍ [3 5] [⍜⟜÷∘ 3 5]
⍤⤙≍ [3 5] [⍜⟜˜÷∘ 3 5]
⍤⤙≍ [2 4 5 3] ⍜⟜↘↻ 1 [2 3 4 5]
⍤⤙≍ {1 [2 3 4 5]} {⍜⟜↘∘ 1 [2 3 4 5]}
# Self
⍤⤙≍ ⟜⍜˙+∘ +1⇡10
⍤⤙≍ ⟜⍜˙×∘ +1⇡10
⍤⤙≍ ⟜⍜˙(+?)∘ +1⇡10
⍤⤙≍ ⟜⍜˙(×?)∘ +1⇡10
⍤⤙≍ ⟜⍜˙(ׯ)∘ +1⇡10
⍤⤙≍ ⟜⍜˙-∘ +1⇡10
⍤⤙≍ ⟜⍜˙÷∘ +1⇡10
⍤⤙≍ ⟜⍜˙(-⌵)∘ +1⇡10
⍤⤙≍ ⟜⍜˙(÷⌵)∘ +1⇡10
# Normal Outside
⍤⤙≍ 5 ⍜+∘ 3 5
⍤⤙≍ 5 ⍜-∘ 3 5
⍤⤙≍ 5 ⍜×∘ 3 5
⍤⤙≍ 5 ⍜÷∘ 3 5
⍤⤙≍ 5 ⁅₁₂ ⍜ⁿ∘ 3 5
⍤⤙≍ 5 ⁅₁₂ ⍜(ⁿ˜÷1)∘ 3 5
# Flipped Outside
⍤⤙≍ 5 ⍜˜+∘ 3 5
⍤⤙≍ 5 ⍜˜-∘ 3 5
⍤⤙≍ 5 ⍜˜×∘ 3 5
⍤⤙≍ 5 ⍜˜÷∘ 3 5
⍤⤙≍ 5 ⁅₁₂ ⍜˜ⁿ∘ 3 5
⍤⤙≍ 5 ⁅₁₂ ⍜˜÷∘ 3 5
⍤⤙≍ 5 ⁅₁₂ ⍜(ⁿ⊙(˜÷1))∘ 3 5
# Normal Inside
⍤⤙≍ 5 ⍜(+3)∘ 5
⍤⤙≍ 5 ⍜(-3)∘ 5
⍤⤙≍ 5 ⍜(×3)∘ 5
⍤⤙≍ 5 ⍜(÷3)∘ 5
⍤⤙≍ 5 ⁅₁₂ ⍜(ⁿ3)∘ 5
⍤⤙≍ 5 ⁅₁₂ ⍜(÷3)∘ 5
⍤⤙≍ 5 ⁅₁₂ ⍜(ⁿ˜÷1 3)∘ 5
# Flipped Inside
⍤⤙≍ 5 ⍜(˜+3)∘ 5
⍤⤙≍ 5 ⍜°(˜+3)∘ 5
⍤⤙≍ 5 ⍜(˜-3)∘ 5
⍤⤙≍ 5 ⍜°(˜-3)∘ 5
⍤⤙≍ 5 ⍜(˜×3)∘ 5
⍤⤙≍ 5 ⍜°(˜×3)∘ 5
⍤⤙≍ 5 ⍜(˜÷3)∘ 5
⍤⤙≍ 5 ⍜°(˜÷3)∘ 5
⍤⤙≍ 5 ⁅₁₂ ⍜(˜ⁿ3)∘ 5
⍤⤙≍ 5 ⁅₁₂ ⍜°(˜ⁿ3)∘ 5
⍤⤙≍ 5 ⁅₁₂ ⍜(˜÷3)∘ 5
⍤⤙≍ 5 ⁅₁₂ ⍜(ⁿ˜÷1⊙3)∘ 5
⍤⤙≍ 5 ⁅₁₂ ⍜°(ⁿ˜÷1⊙3)∘ 5
# Dipped Inside
⍤⤙≍ 5 ⍜(+⊙3)∘ 5
⍤⤙≍ 5 ⍜°(+⊙3)∘ 5
⍤⤙≍ 5 ⍜(-⊙3)∘ 5
⍤⤙≍ 5 ⍜°(-⊙3)∘ 5
⍤⤙≍ 5 ⍜(×⊙3)∘ 5
⍤⤙≍ 5 ⍜°(×⊙3)∘ 5
⍤⤙≍ 5 ⍜(÷⊙3)∘ 5
⍤⤙≍ 5 ⍜°(÷⊙3)∘ 5
⍤⤙≍ 5 ⁅₁₂ ⍜(ⁿ⊙3)∘ 5
⍤⤙≍ 5 ⁅₁₂ ⍜°(ⁿ⊙3)∘ 5
⍤⤙≍ 5 ⁅₁₂ ⍜(ⁿ˜÷1⊙3)∘ 5
⍤⤙≍ 5 ⁅₁₂ ⍜°(ⁿ˜÷1⊙3)∘ 5
⍤⤙≍ 5 ⍜°√(+9) 4
⍤⤙≍ 5 ⍜∩°√+ 3 4
# Atan
⍤⤙≍ [1 2] [⍜∠∘ 1 2]
# Absolute value, Sign, and Mod
⍤⤙≍ "Hello World!" ⍜⌵∘ "Hello World!"
⍤⤙≍ "Hello World!" ⍜±∘ "Hello World!"
⍤⤙≍ 5 ⍜⌵∘ 5
⍤⤙≍ ¯5 ⍜⌵∘ ¯5
⍤⤙≍ 6 ⍜⌵(+1) 5
⍤⤙≍ ¯4 ⍜⌵(-1) ¯5
⍤⤙≍ [¯10_20 30_¯40] ⍜⌵(×10) [¯1_2 3_¯4]
⍤⤙≍ 5 ⍜±∘ 5
⍤⤙≍ ¯5 ⍜±∘ ¯5
⍤⤙≍ 10 ⍜±(+1) 5
⍤⤙≍ ¯10 ⍜±(-1) ¯5
⍤⤙≍ ⟜⍜±∘ ℂ1 2
⍤⤙≍ ⟜⍜±∘ ℂ¯1 2
⍤⤙≍ ⟜⍜±∘ ℂ0 2
⍤⤙≍ @A ⍜±⋅1 @a
⍤⤙≍ @a ⍜±⋅0 @a
⍤⤙≍ @a ⍜±⋅¯1 @a
⍤⤙≍ @A ⍜±⋅1 @A
⍤⤙≍ @A ⍜±⋅0 @A
⍤⤙≍ @a ⍜±⋅¯1 @A
⍤⤙≍ [0_4 6_0] ⍜±(+1) [¯1_2 3_¯4]
⍤⤙≍ [6 7 18] ⍜◿(×2) 5 [3 6 14]
# Rounding
⍤⤙≍ 1.5 ⍜⌊∘ 1.5
⍤⤙≍ 1.5 ⍜⌈∘ 1.5
⍤⤙≍ 1.5 ⍜⁅∘ 1.5
# Late binding
X ← ⚂
⍤⤙≍ 2 ⍜(-X)∘ 2
# Indexes
⍤⤙≍ [5 3 1 2 4] ⍜⍏(↻¯1) [1 4 2 3 5]
⍤⤙≍ [2 5 3 4 1] ⍜⍖(↻¯1) [1 4 2 3 5]
⍤⤙≍ 6 ⍜˜⨂+₁ 3 [0 3 6 2]
⍤⤙≍ "cbc" ⍜⨂+₁ "abc" "bab"
# First/last
⍤⤙≍ [10 2 3] ⍜⊢×₁₀ [1 2 3]
⍤⤙≍ [1 2 30] ⍜⊣×₁₀ [1 2 3]
⍤⤙≍ [1 2 3] ⁅₁₀ ⍜(∠⊢₂)∘ [1 2 3]
⍤⤙≍ [1 2 3] ⁅₁₀ ⍜(∠⊣₂)∘ [1 2 3]
⍤⤙≍ 1 ⍜⊢∘ 1
⍤⤙≍ 1 ⍜≡⊢∘ 1
# Fill
⍤⤙≍ [0 0 3 4 5 6] ⬚0⍜↻∘ 2 [1 2 3 4 5 6]
⍤⤙≍ [0 0 3 4 5 6] ⬚0⍜(↻2)∘ [1 2 3 4 5 6]
⍤⤙≍ [2 3] [⬚5(⍜⬚°◌∘ 2 3)]
# Join
⍤⤙≍ {4 [3 2 1]} {⍜⊂⇌ 1 [2 3 4]}
⍤⤙≍ {5_6 [3_4 1_2]} {⍜⊂⇌ 1_2 [3_4 5_6]}
⍤⤙≍ {∩≡¤ [1 2] [3 4 5]} {⍜⊂≡¤ [1 2] [3 4 5]}
⍤⤙≍ {¯[1 2] ¯[3 4 5]} {⍜⊂¯ [1 2] [3 4 5]}
⍤⟜≍ ⟜⍜°⊂∘ [1 2 3]
⍤⤙≍ ⟜⍜(⊂1_2)∘ [3 4]
⍤⤙≍ ⊃{⊙∘}{⍜⊂∘} 1_2 [3 4]
⍤⤙≍ ⊃(◌⍜(⊂)\+ 1|⍜(⊂1)\+) [2 3 4]
⍤⤙≍ ⊃(◌⍜˜⊂\+ 1|⍜(˜⊂1)\+) [2 3 4]
⍤⤙≍ {1 [3 6 10]} {⍜⊂\+} 1 [2 3 4]
⍤⤙≍ {10 [2 5 9]} {⍜˜⊂\+} 1 [2 3 4]
# Take/drop chains
⍤⤙≍ [⟜∘ ↯5 0 ⟜∘ 0_0_1_1_0 ↯5 0] ⍜(↙2_2↘2_2)¬ ↯5_5 0
⍤⤙≍ [⟜∘ ↯5 0 ⟜∘ 0_0_1_1_0 ↯5 0] ⍜(↙2_2↙¯3_¯3)¬ ↯5_5 0
# Stencil
⍤⤙≍ ⟜(⍜⧈∘∘ ¤¤2)°△4
⍤⤙≍ ⟜(⍜⧈∘∘ ¤¤2)°△4_6
⍤⤙≍ ⟜(⍜⧈∘∘ ¤¤2)°△4_6_8
⍤⤙≍ ⟜(⍜⧈∘∘ ¤[2 2])°△4_6
⍤⤙≍ ⟜(⍜⧈∘∘ ¤[2 2])°△4_6_8
⍤⤙≍ ⟜(⍜⧈∘∘ ¤[2 2 2])°△4_6_8
⍤⤙≍ [2 1 0 5 4 3 8 7 6] ⍜⧈⌞∘≡⇌3⇡9
⍤⤙≍ [2 1 0 5 4 3 8 7 6] ⍜⧈⌟∘≡⇌3⇡9
# Partition
⍤⤙≍ "World! Hello" ⍜⊜□⇌ ⊸≠@ "Hello World!"
⍤⤙≍ "Just A Little Guy" ⍜⊜⊢⌵ ⊸≠@ "Just a little guy"
⍤⤙≍ {"Hello" "World!"} {⍜∩⊜□∘ ∩(⊸≠@l) "Hello" "World!"}
⍤⤙≍ ⤙⍜⊜□∘ [1] "a"
⍤⤙≍ ⤙⍜⊜□∘ [] ""
⍤⤙≍ {"Hey" @ "buddy"} ⍜⊜⌅□∘⊸≠@ "Hey buddy"
# Group
⍤⤙≍ "sdrow emo sera esehT" ⍜⊕□≡⍜°□⇌ ⊸≠@ $ These are some words
⍜⊕∘(↧0) -1[1_0_0 0_1_1 1_0_1] [1_2_∞ 3_∞_4 ∞_5_6]
⍤⤙≍ [0_2_∞ 3_0_0 0_5_0]
⍤⤙≍ ⤙⍜⊕□∘ [1] "a"
⍤⤙≍ ⤙⍜⊕□∘ [] ""
# Rows
⍤⤙≍ [0_¯1_2 3_¯4_5 6_¯7_8] ⍜≡⊡¯ 1 °△3_3
⍤⤙≍ [0_¯1_2 3_¯4_5 6_¯7_8] ⍜≡⊡₁¯ °△3_3
⍤⤙≍ ⊃↙₆⍜≡⇌↙₆ °△12_3
⍤⤙≍ ["ghcd""efab"] ⍜≡₁⊏⇌ [0_1 2_3] ["abcd""efgh"]
⍤⤙≍ ⤙⍜≡₁(□⊏)∘ [0_1 2_3] ["abcd""efgh"]
⍤⤙≍ ⟜⍜≡₁□∘ [1_2_3 4_5_6]
⍤⤙≍ ⊃≡□ ⍜⍚₁∘∘ [1_2_3 4_5_6]
# Transpose
⍤⟜≍ ⟜⍜⍉∘ ↯3_3⇡9
⍤⟜≍ ⟜⍜⍉∘ ↯2_3_4_5⇡120
⍤⤙≍ [1 20 30 4 5] ⍜(↙⊙↘|×10) 2 1 [1 2 3 4 5]
⍤⤙≍ [10 20 3 4 5] ⍜(↙⊙↙|×10) 2 4 [1 2 3 4 5]
⍤⤙≍ [1 2 30 40 5] ⍜(˜↙↘|×10) 2 [1 2 3 4 5] 2
⍤⤙≍ [10_20_30 4_5_6] [⍜⊙⇌(×10) [1 2 3] [4 5 6]]
⍜⊙♭₂≡(⊂⊂) ⊓(♭|∘|♭) ⊃(∘|↯2|∘)↯2_2⇡4
⍤⤙≍ [[0_0_1_0 1_2_3_1] [2_0_1_2 3_2_3_3]]
⍜⊙⊙♭₂≡(⊂⊂) ∩♭ ⊃⟜∘(↯2)↯2_2⇡4
⍤⤙≍ [[0_0_0_1 1_1_2_3] [2_2_0_1 3_3_2_3]]
⍤⤙≍ ⟜⍜°(⍉⊟)∘ [1_2 3_4]
⍤⤙≍ [1 2 3] ⍜♭˙⊟ [1 2 3]
⍤⤙≍ □[1 2 3 4 5 6 7] ≡⍜∩°□(⊂⊂) □[1 2 3] □[4 5 6] 7
⍤⤙≍ [1 2 3] [°[⊙⊙∘] [1 2 3]]
⍤⤙≍ [3 5 6] ⍜°[⊙⊙∘]+ [1 2 5] 6
⍤⤙≍ [3 5 6] ⍜(°[⊙⊙∘])+ 1_2_5 6
⍤⤙≍ [6 1 7] ⍜(°[⊙⊙∘]⇌)+ 1_2_5 6
⍤⤙≍ [8 6 7] ⍜°[⊙⊙∘](++) [1 2 5] 6 7
⍤⤙≍ [8 6 7] ⍜(°[⊙⊙∘])(++) [1 2 5] 6 7
⍤⤙≍ {1 2 3} [°[⊙⊙∘] {1 2 3}]
⍤⤙≍ [1 2 3] [°{⊙⊙∘} {1 2 3}]
⍤⤙≍ [11 12 13] [⍜[⊙⊙∘]+ 1 2 3 10]
⍤⤙≍ ⊃(⍜°⊟+|⍜°[⊙∘]+) [1 2] 4
⍤⤙≍ [¯1 ¯2 ¯3] [⍜[⊙⊙∘]¯ 1 2 3]
⍤⤙≍ [¯1 ¯2 ¯3 ¯4] [⍜[⊙⊙⊙∘]¯ 1 2 3 4]
⍤⤙≍ [1 2 3] ⍜[+1]∘ [1 2 3]
⍤⤙≍ [[2 3 4]] °°[+1] [1 2 3]
⍤⤙≍ [1 4 3] ⍜°[1⊙3]˙× [1 2 3]
⍤⤙≍ [1 4 2 3] ⍜°[1⊙⊙3]˙× [1 2 2 3]
⍤⤙≍ [1 4 4 3] ⍜°[1⊙⊙3]∩˙× [1 2 2 3]
# Repeat
⍤⤙≍ ¯18 ⍜(⍥(+1)4)¯ 10
⍤⤙≍ ¯18 ⍜⍥(+1)¯ 4 10
⍤⤙≍ 3_3 ⊟ ⍜(⍥⊙+1|+⊙˜⊙∘) 0 1 2 4
⍤⤙≍ 3_3 ⊟ ⍜(⍥⊙+1|+⊙˜⊙∘) 0 1 2 4
⍤⤙≍ [0_1_2 3_4_50] ⍜∧⊏(×10) [1 2] ↯2_3⇡9
⍤⤙≍ @l ⍜⊛(⊢⍖°⊚) "Hello World!"
⍤⤙≍ ⟜⍜°/×∘ 70
⍤⤙≍ ⟜⍜°/×∘ +1⇡100
⍤⤙≍ ⟜⍜°/×∘ +1↯2_3_4⇡24
F ← ⍜⊙⊙⊢ ⋅⊙∘
G ← ⍜(⊙⊙⊢) ⋅⊙∘
⍤⤙≍ {F 1 2 [3]} {G 1 2 [3]}
⍤⤙≍ [10 2 3] ⍜(⨬⊢⊣|×10) 0 [1 2 3]
⍤⤙≍ [1 2 30] ⍜(⨬⊢⊣|×10) 1 [1 2 3]
⍤⤙≍ [1 20 3] ⍜⨬(⊡|⊏)(×10) 0 1 [1 2 3]
⍤⤙≍ [1 20 3] ⍜⨬(⊡|⊏)(×10) 1 1 [1 2 3]
⍤⤙≍ {2_5_8 [1_0_1 4_3_2 7_6_3]} {⍜≡⊂≡⇌ [1 2 3] ↯3_3⇡9}
# Maps
⍤⤙≍ map "abc" [1 2 3] ⍜°map∘ map "abc" [1 2 3]
⍤⤙≍ map "abc" [1 2 3] ⍜get∘ @a map "abc" [1 2 3]
⍤⤙≍ map "abcd" [1 2 3 0] ⬚0⍜get∘ @d map "abc" [1 2 3]
⍤⤙≍ map "abc" [1 2 3] ⍜insert∘ @c 5 map "abc" [1 2 3]
⍤⤙≍ map "abc" [1 2 3] ⍜insert∘ @d 4 map "abc" [1 2 3]
⍤⤙≍ map "abc" [1 2 3] ⍜remove∘ @a map "abc" [1 2 3]
⍤⤙≍ map "abc" [1 2 3] ⍜remove∘ @d map "abc" [1 2 3]
⍤⤙≍ ⟜⍜(get"abc")∘ map {"abc"} [1]
⍤⤙≍ □⟜⍜(◇get"abc")∘ map {"abc"} [1]
map {"alice" "bob" "charlie"} [1 2 3]
⍜get(+1) {"alice" "charlie"}
⍤⤙≍ map {"alice" "bob" "charlie"} [2 2 4]
# Pattern matching
⍤⤙≍ "2 - 4" ⍜°$"_ - _"∩(×2⋕) "1 - 2"
⍤⤙≍ [1 20 30] ⍜°(⊂1)(×10) [1 2 3]
⍤⤙≍ map 2_1 4_30 ⍜°(insert1)(×10) map 1_2 3_4
# Unby
⍤⤙≍ [1 20 3] °⊸(⊡1) 20 [1 2 3]
⍤⤙≍ ℂ6 8 °⊸⌵ 10 ℂ3 4
⍤⤙≍ π/3 °⊸°∠ √3 1 π
⍤⤙≍ °△6_4 °⊸(⧻△) 2 °△2_3_4
⍤⤙≍ °△6_4 °⊸(⧻△) ¯1 °△2_3_4
⍤⤙≍ 5 ⍜°⊸(⧻△)() 2 5
⍤⤙≍ [π π π π π] °⊸⧻5 π
# Antiby
⍤⤙≍ [1 10 3] ⌝⊸⊡ 1 10 [1 2 3]
⍤⤙≍ [2 5 3] ⌝⊸▽ [1 0 1] [2 3] [4 5 6]
⍤⤙≍ map [1 2] [5 4] ⌝⊸get 1 5 map [1 2] [3 4]
# Under/unby fork
⍤⤙≍ "wham" ⍜⊃⊢⊣⊓(+3|-7) "that"
⍤⤙≍ "wham" ⍜⊃⊢⊣⋅◌ "that" @w @m
⍤⤙≍ "wham" °⊸⊃⊢⊣ @w @m "that"
⍤⤙≍ "THESE THOSE" °⊸⊃±◴ 1 "thes o" "abcdceabfdc"
⍤⤙≍ [2 3 4 10] ⍜⊃[⊡0|⊡1|⊡2]+₁ [1 2 3 10]
# Bracket
⍤⤙≍ {[6 2 3] [4 5 1]} {⍜⊓⊢⊣˜⊙∘} [1 2 3] [4 5 6]
# No anti
⍤⤙≍ ⟜⍜(ℂ°⊟)∘ [1 2]
⍤⤙≍ ⟜⍜(ℂ°[⊙⊙∘])∘ [1 2 3]
# Sort
⍤⤙≍ [4000 20 300 1] ⍜⍆(טⁿ10°⊏) [4 2 3 1]
⍤⤙≍ [4 200 30 1000] ⍜(⇌⍆|טⁿ10°⊏) [4 2 3 1]
# Anti orient
⍤⤙≍ [10_2_3 4_50_6 7_8_90] ⍜⌝⤸(×10) 0_0 +1°△3_3
⍤⤙≍ [10_2_3 4_50_6 7_8_9] ⍜⌝⤸(×10↙2) 0_0 +1°△3_3
⍤⤙≍ [0_2 4_6 8_10 12_14] ⍜(⌝⤸1|▽1/2) °△4_4
# Obverse
⍤⤙≍ 5 ⍜⌅(+|-)∘ 2 5
⍤⤙≍ 3 ⍜⌅(+|)∘ 1 2
⍤⤙≍ 3 °⌅(°⊟|+) 1 2
⍤⤙≍ 68 ⍜⌅(+|⟜+|-)× 2 5 10
⍤⤙≍ 2 ⌝⌅(+|-) 3 5
F ← ⌅(+|⊃⌊(⁅₁₂◿1)|⟜+|-|-)
⍤⤙≍ 3 F 1 2
⍤⤙≍ [5 0.2] [°F] 5.2
⍤⤙≍ 68 ⍜F× 2 5 10
⍤⤙≍ 2 ⌝F 3 5
⍜⌅⍜()()() # Should do nothing
⍤⤙≍ [10 2 30 4 50] ⍜(▽⌅⊸◿2|×10) [1 2 3 4 5]
⍤⤙≍ [1 20 3 40 5] ⍜(▽⌅⊸(¬◿)2|×10) [1 2 3 4 5]
⍤⤙≍ [1 20 3 40 5] ⍜(▽⌅⊸(¬◿2)|×10) [1 2 3 4 5]
F ← ⌅(+|⌅(-|⟜-|×10+))
⍤⤙≍ 3 F 1 2
⍤⤙≍ 1 ⌝F 1 2
⍤⤙≍ 2 ⍜F∘ 1 2
⍤⤙≍ 2 ⍜(F1)∘ 2
⍤⤙≍ 20 ⍜⌝F∘ 1 2
⍤⤙≍ 20 ⍜(⌝F1)∘ 2
# Regex
⍤⤙≍ Lorem ⍜(regex"\\w+")∘ Lorem
H ← "Hello, world!!"
⍤⤙≍ "world, Hello!!" ⍜regex⇌ ⊙H$ \w+
⍤⤙≍ "Holle, wdlro!!" ⍜regex⍚(⊂⋅⊙⇌°□₃) ⊙H$ (\w)(\w+)
⍤⤙≍ 0 ⍤⤙≍ H ⍜regex⟜⧻ ⊙H$ \d+
⍤⤙≍ "@, w!!" ⬚@@⍜regex≡⊣ ⊙H$ \b([a-z])?\w*\s?
⍤⤙≍ "HHello, wworld!!" ⍜regex≡(◇▽2⊣) ⊙H$ \b(\w)
⍤⤙≍ ".H.e.l.l.o.,. . . .w.o.r.l.d.!.!." ⍜regex⋅@. "" H
# different replacement forms:
⊙H $ (\w)(\w*)
⍤⤙≍ "olleH, dlrow!!" ◡⍜regex⍜≡⊢⍚⇌ # 2d, boxed strings
⍤⤙≍ "olleH, dlrow!!" ◡⍜regex(⍚⇌≡⊢) # 1d boxed strings
⍤⤙≍ "bip, bip!!" ◡⍜regex⋅(□"bip") # boxed string
⍤⤙≍ "*, *!!" ◡⍜regex⋅(□@*) # boxed char
⍤⤙≍ "olleH, dlrow!!" ◡⍜regex≡(⊟◇⊸⇌⊢) # 2d strings
⍤⤙≍ "olleH, dlrow!!" ◡⍜regex≡(◇⇌⊢) # 1d strings
⍤⤙≍ "bip, bip!!" ◡⍜regex⋅"bip" # string
⍤⤙≍ "*, *!!" ◡⍜regex⋅@* # char
⋅◌
# Experimental!
# Un under
⍤⤙≍ [[1_2 3_4] [1_2 5_6]] [°⍜∩(↘1)⊟] [1_2 3_4 5_6]
⍤⤙≍ [10 2] [°⍜⊙(×10)⊟] [1 2]
# Under under
⍤⤙≍ [1 2 3 4 5 0] ⍜⍜°⊏⇌(⊂0) +1⇡5
⍤⤙≍ ⟜⍜⍜°⍉≡↻₁∘ [1_2_3 4_5_6 7_8_9]
⍤⤙≍ ⟜⍜°⍜°⍉≡↻₁∘ [1_2_3 4_5_6 7_8_9]
# Reach
⍤⤙≍ [4 ∞ 5] [⍜(⊟⊙◌)+ 1 ∞ 2 3]
⍤⤙≍ [¯1 ∞ ¯2] [⍜(⊟⊙◌)¯ 1 ∞ 2]
# Sided under
⍤⤙≍ [0.25 ¯1] [⍜⌟¯°+ ¯1.25]