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How to write local function which can be called from different levels

vivo
New Contributor II

Hi,

My code below works without error:

No Error

g:`;
g:{[xG] xG + 2}; // global; works for f and h
f:{[xF]
h:{[xH] g[xH] + 3};
show g[xF] + h[xF];
}
f[40]; // i.e. 87; no error

 

However, I prefer a local g instead of a local one. I also tried below, but both failed:

Trial 1 (Failed)

g:`;
f:{[xF]
g:{[xG] xG + 2}; // local; doesn't work for h
h:{[xH] g[xH] + 3};
show g[xF] + h[xF];
}
f[40]; // error

and

Trial 2 (Failed)

g:`;
f:{[xF]
h:{[xH] g:{[xG] xG + 2}; g[xH] + 3}; // local; doesn't work for f
show g[xF] + h[xF];
}
f[40];// error

 Is it possible to have a local g without an error? Thanks.

1 ACCEPTED SOLUTION

rocuinneagain
Contributor II
Contributor II

You could pass it in to a projection  

 

q)f:{[xF] g:{[xG] xG + 2};h:{[g;xH] g[xH] + 3}[g];g[xF] + h[xF]}
q)f[40]
87

 

Or composition in this basic case 

 

q)f:{[xF] g:{[xG] xG + 2};h:+[3] g @;g[xF] + h[xF]}
q)f[40]
87

 

 

View solution in original post

1 REPLY 1

rocuinneagain
Contributor II
Contributor II

You could pass it in to a projection  

 

q)f:{[xF] g:{[xG] xG + 2};h:{[g;xH] g[xH] + 3}[g];g[xF] + h[xF]}
q)f[40]
87

 

Or composition in this basic case 

 

q)f:{[xF] g:{[xG] xG + 2};h:+[3] g @;g[xF] + h[xF]}
q)f[40]
87