Re: RandomList and pure function

• To: mathgroup at smc.vnet.net
• Subject: [mg70856] Re: RandomList and pure function
• From: Jean-Marc Gulliet <jeanmarc.gulliet at gmail.com>
• Date: Mon, 30 Oct 2006 05:32:15 -0500 (EST)
• Organization: The Open University, Milton Keynes, UK
• References: <ei18or\$8n7\$1@smc.vnet.net>

```Marc VIAL wrote:
> Hi,
>
> Sorry for this naive question, but I try to apply a pure function of 2 arguments to a list of n rows with 2 clm using the mapping function:
>
> n=100;lis=RandomReal[{0,1},{n,2}];
> (#1+2 #2)&/@lis
>
> however it only captures the first term in the list and leave #2 unassigned.
>
>
> Thanks
> Marc
> _________________________________________________________________
>
>
Hi Marc,

Something that the following should fit your needs:

In[1]:=
With[{n = 10}, lst = Table[Random[], {n}, {2}]]

Out[1]=
{{0.42848, 0.543534}, {0.254961, 0.70838},

{0.612299, 0.775002}, {0.977606, 0.522617},

{0.774181, 0.38309}, {0.0214249, 0.411784},

{0.264842, 0.955301}, {0.791362, 0.295489},

{0.62782, 0.534301}, {0.742154, 0.924198}}

In[2]:=
({First[#1] + 2, Last[#1]} & ) /@ lst

Out[2]=
{{2.42848, 0.543534}, {2.25496, 0.70838},

{2.6123, 0.775002}, {2.97761, 0.522617},

{2.77418, 0.38309}, {2.02142, 0.411784},

{2.26484, 0.955301}, {2.79136, 0.295489},

{2.62782, 0.534301}, {2.74215, 0.924198}}

Regards,
Jean-Marc

```

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