Re: functional programming

*To*: mathgroup at smc.vnet.net*Subject*: [mg75181] Re: functional programming*From*: Jean-Marc Gulliet <jeanmarc.gulliet at gmail.com>*Date*: Thu, 19 Apr 2007 04:38:11 -0400 (EDT)*Organization*: The Open University, Milton Keynes, UK*References*: <f04n9k$8ec$1@smc.vnet.net>

Raj wrote: > Could somebody tell me how to do this > > tsome = {{35, 38}, {2064, 2068}, {2182, 2183}}; > Select[tsome, 1280 - 1281 =E2=89=A4 #[[2]] =E2=89=A4 1280 &] > > Now instead of using 1280 in the Select function, I want to use a > variable and get the values as this variable varies. I know that a > Table can be used and the value of the variable can be varied. But if > possible, I want to do it in a "Truly functional way". > > for example something like > > Select[tsom, var-1281<=#[[2]]<=1280&]&/@{list of values over which the > variable varies} > > Thanks, > > Raj > > You could define your own function Select as in In[1]:= tsome = {{35, 38}, {2064, 2068}, {2182, 2183}}; mySelect[val_] := Select[tsome, val - 1281 <= #1[[2]] <= val & ] mySelect[1280] mySelect /@ {1280} mySelect /@ {1280, 38} Out[3]= {{35, 38}} Out[4]= {{{35, 38}}} Out[5]= {{{35, 38}}, {{35, 38}}} Regards, Jean-Marc