... the function defined such as DEF FN g(x, y, p, q ...

... ?

Using:

DEF FN w(w$,o$,c)=VAL ... (("FN w(w$,o$,c+1)" ... />
with:

w$(FN w(w$,o$,1))
FN w(w$,o$,1)*100).

... after each parameter in the DEF FN definition. There's code there ...

... nowhere.
[code]
2 DEF FN t$(n,t,d)
+VAL$ (("FN t$("
+STR$ (n-INT ...

... after every parameter of a DEF FN.

By the time ...

... BASIC was at locating the DEF FN when called upon.

[code]
10 DEF FN a()=10
20 PRINT ... :
[code]
10 REM : DEF FN a()=10
20 PRINT ... ROM routine that looks for DEF FN, DATA and (oddly) NEXT appears ...

... simple thing:

10 def fn a(x)=x*10
20 print fn a(10)

and ...

... this code:
[code]10 DEF FN f(a,b)=a+b ... , if I change the DEF FN to: DEF FN f(a,b)=a, the ... call.

[code]10 DEF FN f(a,b)=a+b ...
20 DEF FN g(a,b)=a+b ... !
40 PRINT FN f(FN f(2,FN g(3,1)),4 ... !
100 PRINT FN g(FN g(2,FN g(3,1)),4 ...

... now ignored (BadBeard)
Fixed DEF FN statements - not correctly tokenised (Chris ...

... a thing or two regarding Def FN and special pokes etc etc ...

... [/i])
[code]
DEF FN B(b$)=VAL(CHR$ 196 ... [/i])
[code]
DEF FN C$(n)=CHR$ INT (n ... [/b]()
[code]
DEF FN F()=65536-USR 7962
[code]
DEF FN H$(n)=CHR$ (INT (n ... [/i])
[code]
DEF FN L$(l$)=CHR$ (CODE l ...

... /> Fixed Crisis's bug with DEF FN, and colin's problem with ...

Are there any interesting articles or books that explore some of the lesser used BASIC commands/functions e.g. DEF FN, IN, OUT etc?

The Spectrum BASIC manual only glosses over them without going into a lot of detail.

Necros.

... links a bit.
Fixed - DEF FN lines were getting their last ... compatibility meant that REM and DEF FN behaved incorrectly.
Fixed - REM ...

... links a bit.
Fixed - DEF FN lines were getting their last ... compatibility meant that REM and DEF FN behaved incorrectly.
Fixed - REM ...

A while ago Phil demonstrated a nice example of recursiveness in a DEF FN function. Sadly it doesn't appear to be online anymore and I have difficulties finding it out myself: does anyone have a good example? Thx.

... GO TO 20
60 DEF FN M$(IE)=""+M$(IE)+""" is ... evil"
70 PRINT FN M$(IE)
REM etc ...

... : D RANDOMIZE : K : T
DEF FN : E : SYM + 1 READ : E ... + V RUN : K : R
FN : E : SYM + 2 SAVE : K ...

... "Constant e: ";e
210 DEF FN h(e,x)=((e^((2 ... ^((2*x))-1))
220 DEF FN v(a,c,e,g ... *m*g)/(p*a*c)))*FN h(e,(t*(SQR ((g ... =60
240 LET v=FN v(a,c,e,g ...

... information required:": PRINT
20 DEF FN a(d,h,m,s ... /60/60/24)
30 DEF FN b(j,m,d,c ... +c-1524.5
31 DEF FN c(j)=357.5291+(0 ...

... keyword - GO TO, GO SUB, DEF FN etc. (Ref)
Fixed - You ...

... ]
// page 150
130 DEF FN d(s$) = (s$ > "9 ...

... :[/B] I'd say the DEF FN command, but you have to ...

I have a function: DEF FN t(t$,m,t)=USR ... , for an example: LET bc=FN t("t$()",mcworkspace,mcputt)
DEF FN t(t$,m,t)=m ...

... br /> [code]
4 DEF FN p(a)=PEEK a+256 ... br /> DEF FN g(v)=v-FN h(v)*256:
DEF FN h( ... 5):
LET newVARS=FN p(23627)+machine_code_length+1:
" POKE 23627,FN g(";newVARS;")"'
" POKE ...

... following:

[CODE]100 DEF FN a(x,y,p$)=CODE ... TO y)
110 PRINT FN a(3,4,"Paddy")[/CODE ...

Go here:

[url]http://www.zxspectrum4.net/forum/viewtopic.php?f=6&t=17[/url]

And get the latest if you're interested. I've added procedures and functions (DEF PROC and speccy-style DEF FN).

D.

... br /> 10 DIM s$(6912): DEF FN p(a)=PEEK a+256 ... 1):
DEF FN l(v)=v-256*FN h(v): DEF FN h(v ... )=INT (v/256):
LET udg=FN ... 14,0,FN l(df),FN h(df),FN l(dl),FN h( ... searches the DEFADD area (where FN variables are defined) before ...