:= vs = in some function definitions
- To: mathgroup at smc.vnet.net
- Subject: [mg113234] := vs = in some function definitions
- From: Sam Takoy <sam.takoy at yahoo.com>
- Date: Wed, 20 Oct 2010 04:06:37 -0400 (EDT)
Have read everything I could find regarding delayed assignment, I'm
still not quite sure when to use which.
For example, in the definition
f[x_] = IdentityMatrix.Append[Range[1, 49], x];
could there ever be any reason to use := ?
It seems that using := will condemn the function to repeated extra
work every time its called. So could there be a situation where the use
of ":=" for the above function is recommended?
Many thanks in advance,
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