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MapThread

MapThread(f, {{a1, a2, ...}, {b1, b2, ...}, ...})

returns {f(a1, b1, ...), f(a2, b2, ...), ...}.

MapThread(f, {expr1, expr2, ...}, n)

applies f at level n.

Examples

>> MapThread(f, {{a, b, c}, {1, 2, 3}})       
{f(a,1),f(b,2),f(c,3)}
 
>> MapThread(f, {{{a, b}, {c, d}}, {{e, f}, {g, h}}}, 2)    
{{f(a, e), f(b, f)}, {f(c, g), f(d, h)}}

Non-negative machine-sized integer expected at position 3 in MapThread(f, {{a, b}, {c, d}}, {1}).

>> MapThread(f, {{a, b}, {c, d}}, {1})    
MapThread(f, {{a, b}, {c, d}}, {1})

Object {a, b} at position {2, 1} in MapThread(f, {{a, b}, {c, d}}, 2) has only 1 of required 2 dimensions.

>> MapThread(f, {{a, b}, {c, d}}, 2)   
MapThread(f, {{a, b}, {c, d}}, 2)

Incompatible dimensions of objects at positions {2, 1} and {2, 2} of MapThread(f, {{a}, {b, c}}); dimensions are 1 and 2.

>> MapThread(f, {{a}, {b, c}})    
MapThread(f, {{a}, {b, c}})    
 
>> MapThread(f, {})    
{}    
 
>> MapThread(f, {a, b}, 0)    
f(a, b)

Object a at position {2, 1} in MapThread(f, {a, b}, 1) has only 0 of required 1 dimensions.

>> MapThread(f, {a, b}, 1)    
MapThread(f, {a, b}, 1)

Implementation status

  • ✅ - full supported

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